Force

Erosion is defined as the removal and transport of earth materials by natural agents and can be split into two main categories. Abrasion (or corrasion) is the glacier’s use of angular debris, held by the ice, to scrape away at the underlying rock. Evidence of this in an area undergoing glaciation are scratches on rock known as striations. Plucking involves the glacier freezing on to blocks of rock and pulling them away. Meltwater will assist in this plucking process: pressure builds up behind a protrusion of rock and so causes melting.

The meltwater penetrates any cracks and freezes around the rock (regelation) which is then pulled out by the glacier. Weathering is similar to erosion in that it includes the breakup of rocks, just not the transportation of the materials formed as does erosion. The specific definition of weathering is the breakup of rock due to exposure to the atmosphere. The weathering of a rock by freeze-thaw action (or frost shattering) may break up rock in periglacial conditions before glaciers advance.

At the early stage of corrie formation freeze-thaw action and possibly chemical weathering will weather rock beneath the accumulating patch of snow (the process of nivation). During glaciation, meltwater will give rise to freeze-thaw action at the base of the glacier. Examine the impact of glacially eroded landforms on human activity “The impact of glaciation on human activity has been considerable both in lowland and highland areas. ” (David Jones and Lawrence Kimpton 2000).

This question focuses on how human activity has been affected by glacial erosion. The most recent glacial period began approximately 30,000 years ago and ended 10,000 years ago. At its peak 29% of the Earth’s surface was covered by ice in comparison to 10% covered today. Sea level fell by at least 100 m and the beach was as much as 150 km further east along the Atlantic coast, thus forming land bridges between North America and Asia, which allowed for the migration of animals and humans to previously glaciated areas.

Glacial eroded landforms include the features horns (pyramid shaped peaks), arites (knife shaped ridges), cirques (a bowl shaped depression found in mountains), erratics (boulders), valleys, tunnels and lakes. These landforms have affected human activity in various ways, including tourism, communications, farming and settlement and industry. Many upland areas that experienced the effects of prolonged glacial erosion during the Pleistocene have become important centres of tourism.

Highland areas both those glaciated in the past and those with glaciers remaining today, are major areas of tourism because of the spectacular scenery and their suitability for winter sports. The Cirque-arete-trough landscape attracts hill walkers, scramblers, climbers, mountaineers, photographers, botanists, skiiers, snowboarders, hang gliders, painting, canoeing, sailing etc. In Britain, the Highlands of Scotland have become an important centre for summer holidays and winter skiing, whilst the National Parks of Snowdonia, the Lake District and Peak District are visited by millions of tourists each year.

Areas such as the Lake District are increasingly popular for short weekend breaks. The attractions of these areas for tourism owe much to the effects of glaciation. The sharply defined peaks, deep U-shaped troughs and numerous lakes are all impressive landform features and provide these uplands with their attractive scenery. The rugged landscape appeals to many weekend hill walkers and mountaineers. The lakes which provide a range of activities -sailing, canoeing, swimming- and possess their own pleasant climates have become important centres of tourism.

Large scale winter tourism is promoted in the Alps and similar locations by the existence of permanent snowfields and the heavy winter . Aviemore is one of the largest winter tourism centres in Britain with several ski runs on the upper slopes of the Cairngorms. Communications are also affected by glacially eroded landforms. Glaciated valleys offer natural routeways through high mountain landscapes and lower areas e. g. the Mohawk Gap that leads to New York. Settlement and Industry can hug the glacial trough floor, which often provide transport routeways.

Many aspects of transport and communications -by land, sea and waterways -have been affected to a considerable degree by glacial action. In many upland areas, glacial breaches and troughs often form the only routeways suitable for communication by land. This situation is exemplified in the Highlands of Scotland where communications links by land north, and west of the Glen More are extremely difficult. Much of the land surface lies over 1000 metres above sea level, and consists of rugged mountains with steep, precipitous slope and badly drained moorlands.

The presence of numerous lochs and fjords, hemmed in between high mountains, has effectively prevented any significant north-south routes being developed, even along the coast. Glacial breaches across the major watersheds form the only realistic routeways. Only two railway lines traverse the region -from Dingwall to Kyle of Lochalsh via Glen Carron and from Fort William to Mallaig via Lochs Eil and Ailort. All of the road links between Glen More and the west coast rely on glacial breaches which connect westwards and eastwards facing troughs. Glaciated highlands with high snowfalls present hazards such as avalanches.

As the pressure of development increases, as in skiing areas, the impact of avalanches on people and settlements becomes greater. They are caused when the snow pack is destabilised suddenly by a loss of cohesion between naturally forming layers in the snow. Glacially eroded areas can lead to a channelled avalanche by which the avalanche progresses down a gully. Avalanches can block roads and railways, cut off power supplies and telecommunications and under extreme conditions, destroy buildings and cause loss of life. Therefore, glacially eroded landforms have impacted human activity, leading to management programs.

For example Juneau, in Alaska, has a high avalanche risk. Many houses and businesses lie in the direct path of known avalanche routes and thus the various management schemes as seen above were discussed, and some put in place to protect the now habituated area. However, avalanches only present problems to certain areas. Slopes, for avalanches to occur, are usually greater than 22 degrees but less than 60 degrees, beyond which point it is unlikely that any significant snow pack will build up. Avalanches also tend to occur more often in spring when the temperatures rise and the snow pack has been accumulating all winter.

Prosperity can be gained from the industrial development available due to glacially eroded landforms. Glacially eroded landforms offer scope for HEP production, with their steep, deep valleys for storage and rock lips providing sites for dam construction. Hydroelectric power (HEP) is the most widely used renewable form of energy. Although globally it accounts for only 6 percent of all electricity generated, in some countries it provides much more. Norway, for example, produces 96 percent of its electricity from HEP. The scale of HEP schemes varies enormously.

In some Alpine villages, small HEP generators supply the power for a single house or hotel. At the other extreme, large HEP stations feed directly into the UK national grid. The advantage of HEP is that running costs are very low and power is instantly available. The main disadvantages are that initial building costs are high, the visual impact might damage the scenic value of a landscape, and the demand for energy is often some distance away. The positive impact of this on human activity can however have some negative impacts. Some ecological damage is also caused if the migratory routes of fish, such as salmon, are blocked.

Fish ladders are sometimes built to avoid this problem. Also, when water passes through HEP schemes, the effect of the vertical drop can be to increase the amount of dissolved oxygen and nitrogen in the water. This can be harmful to fish, causing gas bubble disease. HEP in Britain is mostly generated in the glaciated uplands of North Wales, Cumbria and the Scottish Highlands. This is, because, firstly, mountain areas receive the highest rainfall in Britain. For a successful scheme to operate there must be a, reliable supply of running water otherwise the turbines will not turn.

Secondly the physical relief is favourable. Glacial troughs, steep stream gradients, hanging valleys and lakes provide the ideal conditions. If natural lakes do not occur, glaciated valleys are relatively cheap to dam because they tend to be narrow and steep sided. Water which is used for HEP is not wasted, it then carries on down the valley. If the valleys are dammed, and the shape of the glacial troughs makes this very straightforward, then the water can be collected and sent to cities in areas of the country where there is perhaps not as much rain as in the highland areas.

Glaciers impact human activity here by provide drinking water direct in some areas: rivers like the Rhine and Rhone are fed from glaciers. There is a fear that they may dry up if global warming melts the Alpine glaciers. People in La Paz, Bolivia have water from nearby glacier as public supply. People in the Rhone valley channel glacial meltwater to irrigate their crops. Llyn Peris is a moraine dammed overdeepened ribbon lake, and provides water for Llanberis in N. Wales.

Lake Vyrnwy in mid Wales occupies a glacial trough which was flooded in 1889 by building a dam across the valley. Glacially eroded landforms affect human activity both positively and negatively. Avalanches expose inhabitants of the area to great risk, however, they still choose to live there. The positives include tourism, an industry which at present day is thriving and the attractions of these areas owe much to the effects of glaciation. HEP power provides areas with renewable energy and areas with drinking water and natural routeways are provided by glacial erosion.

Although, there are ways to make it easier for both the patient and the medical billing specialist and that is to use online registration. However, let us discuss the current process first. Although, the actual process may vary from practice to practice, the main objective behind the process is to obtain Information from new and established patients while he/she Is checking In at the practitioner’s office, the hospital, or health clinic. Patient flow can be maintained if the medical practice implements an effective intake process.

The intake process is just as important in serving satisfied customers as how he/she are treated during the process, time waiting in the waiting room to be taken back to the exam room, and time spent with the physician. If any of the processes are caking in organization, there will be unsatisfied customers, or patients, which, in turn, leads to less customers, or patients, that the physician administers treatment to. The process begins before the patient ever steps foot inside the practitioners office.

As soon as the patient calls the office to make an appointment the intake process begins because when a patient calls to make an appointment, the individual in charge of scheduling usually gathers the person’s full name, telephone number, address, date of birth, gender, reason for the appointment, the name of the health Lana (If the patient has knob and the name of the referring physician (If the patient Is referred) (Valueless, Bases, Newbie, & Gaggers, Chapter 3-Patient Encounters and Billing Information, 2008).

Then the office employee schedules the patient for the appropriate amount of time according to the reason for the visit. When the patient comes into the office the day of the appointment, if he/she is a new patient, he/she must come in early to fill out paperwork.

One way that this can be made easier for patients, as well as medical staff, is for the medical practice to have online registration available to the patients. Online registration is a tool used by medical facilities to allow patients to register his/her billing and medical information before coming into the office for the first time. Because the patients are responsible for filling out the registration, there are fewer errors and less work for he staff member responsible for putting the information into the computer program. Furthermore, the patients look at it as a convenience (Sporran Solutions, 2011). Patients view this as a convenience because it enables him/her to fill out their information on his/her own time- at any time day or night.

So, instead of having to fill out the information when he/she arrives at the office, he/she can fill it out beforehand and have less time spent in the waiting room (Sporran Solutions, 2011). Online registration also enables medical staff to receive and chart information more accurately and efficiently. So how does it work? When the patient calls to make his/ her first appointment the staff member that he/she is talking to tells him/her that they are able to register online before their first appointment (Sporran Solutions, 2011). The patient fills out the information and once it is completed the staff member can put it into the system, print it, and prepare the patient chart before the visit; physician reviews medical history more quickly (Sporran Solutions, 2011).

Aim:

To investigate the theory of equilibrium via the completion of two experiments that rely on the use of equations TPLcos +TPMcos, which can be rewritten as (Mass Ag) cos+(Mass Bg) cos For the second part of the investigation, I will try to prove the equation

(W*x)/d +weight of a ruler.

Introduction

In this investigation, I will carry out two experiments, which in each case will prove a different aspect of the theory of equilibrium. There are two theories’ I wish to prove. The first is ” tension (Tpl) in the string Pl is equal to the weight of A and tension in the string pm (Tpm) is equal to the weight of B. For equilibrium the sum of the vertical components of these two tensions must be equal to the weight of c. Which means that:

Tpl cos + Tpmcos = MassCg

which can be written as

(MassAg) cos  +(MassBg) cos = MassCg (equ 1)

Also: the moment of a force about a point is equal to the magnitude of the force x its perpendicular distance from the pivot. For equilibrium, the moment of the weight about the pivot will be equal to the moment in the opposite direction due to the weight of the ruler.

Therefore (W*x)= weight of the ruler times distanced

Weight of ruler = (W*x)/d. (equ 2)

Method for experiment A:

1. Set up the arrangement shown in figure 1, check that the point p is in equilibrium.
2. Note the value of masses A, B, and C and measure the angles LPO and MPO.
3. Keep masses A and B constant and note the new value of angles and  for different values of mass C
4. Record results in tabular form.

Method for experiment B:

1. Set up apparatus as in fig 2.
2. Find a point of equilibrium.
3. Note value for the mass used and the distances x and d.
4. Repeat last two stages for several sets of masses and record results in tabular form

Calculation

These were done on paper by hand for ease of presentation

Error Analysis

I have generated my errors on the fact that I thought that I could only read the I choose the error of. The way in which I got the final answer out was to run through the calculation twice, once with the answer I got – the error and then again this time with the answer I got + the error. I think that in the first experiment I was a little over the top with the error. I said that I could read the angle to about 5. But when I did the calculation again with the new values. I found that the gap was quite large. And that I was quite close to the true value and that although the value did fall in the gap, the gap could have been a lot smaller. This says to me that the error need not have been so large and that I read the angle quite well.

Conclusion

In conclusion, I have found out that equ 1 stands true. In the aim, I set out to see if I could prove it I have put in all the results. The answers I get out are generally good. They are the same as the mass or in the cases where they are not, they are close and fall well in the range of the errors. Problems with this experiment: the main problem I had with this experiment is the way I was told to find the angle. This way was not that accurate. It left a large margin for error. These are some of the anomalies that may have crept in. For the second of the two experiments, I found that the mass of the ruler was 0.128g. This was obtained by weighting the ruler on a set of scales. After putting the numbers through the formula for weight of ruler, and then dividing the output by g, which was 10, I managed to get a value for the mass of the ruler.

On average this value was 0.119g, which is only about 7% away from the real mass of 0.128g.on farther analysis and after calculating the upper and lower bounds by changing the results by adding or subtracting the errors I found that the outcome from adding the errors to the results and the outcome from subtracting the errors was the same, 0.119g. This meant that the error was not a large enough value to affect the results in a significant way. Therefore finally I found that the mass on the ruler to 0.119g this is 7% out for the value, which I recorded as the mass for the ruler. The reason for this is unknown. I can only guess the reason. One possibility is the mass I recorded for the ruler was out. And as my results are so consistent this is a large possibility.

All of these Jobs were processed by a screening tool called the Physical Demands Analysis Worksheet. With this work sheet along with feedback from the worker we were able to determine and make an early hypothesis at the Jobs with the highest biomedical risk. Once the specific risk factors of the job have been identified, we can then use ergonomic analysis tools and guideline comparisons to pacifically quantify the Job demands. The specific analysis tools that we will use to identify the Job stresses are DSSSL, AD Watch. NOSH lift/pull/push equations and table guidelines, Snoop carrying/left/lower/push/pull equations, and the Rapid Upper Limb Assessment.

The assumption made when gathering Information on the worker Is to assume all workers have the same/scalar dimensions as the worker being analyzed for this job. For the job demands that require the worker to use low back moments (skate sharpening, boxes off shelf, Winter stagier and skate filter tasks) the analysis tools that will be used are DSSSL and AD Watch. The collected data used came from measuring the weights of the objects and subject by a simple weight scale assuming no peculations between loads. Other measuring devices such as measuring tapes to measure distances and heights, galvanometer to measure Joint angles, camera for picture to analyze after work site analysis and force gauge to measure push and pull forces.

These models will be used to measure the outputs and compare them to the Action Limits and/or Maximal Permissible Limit. In order to find out which tasks exceed the Action Limits and/or Maximal Permissible Limit of the compression or shear forces along the spine measurements of postures and loads must be collected. Once the data Is collected and calculated the comparison will be between the actual comparison will be between the two Joint models; DSSSL and AD Watch to determine the optimal Joint loads and increase the validity of the results. Shoulder tasks will also be analyzed by the DSSSL for awkward shoulder movements and postures with loads.

Other Job demands(snowboard waxing, boxes off shelf, winter Steiner, Skate Filter-lifting) that require lifting, pushing, pulling, and carrying will be calculated using NOSH equations. These calculations require the data collection of the repetition of the task, the distance traveled via pushing/carrying/lifting by using measuring tape, force(load) by using a force gauge or weight scale, and general information about the individual. The comparisons will be between the calculated results and the NOSH and SNOOP guidelines and also a comparison between the woo guidelines. To properly interpret the data to encompass a wide range of workers we will general construct our data for worse case scenarios or for workers of the Male 10th %.

Lastly the Rigid Upper Limb Assessment will determine what risks are in upper limbed tasks(skate sharpening, snowboard waxing, winter Steiner, and skate filter tasks) by using Joint angles (measured by goniometry) and loads (measured by force gauge or weight scales). The comparison is within the assessment based on the resultant number. The purpose of all the assessments is to identify and quantify the risk of injury to understand the location of the risk and therefore investigate possible solutions. When considering our recommendations we will re-assess the risk factors using the same tools for the same Jobs to compare and note improvements. An assumption made for this particular tool is to neglect any lower limb contributions to the risk of injury when performing the tasks. Also another assumption is using this model for non-static work such as snowboard waxing.

Setting up the paradigm. How do we know there is a God? If anything exists there is a God because you cannot create something from nothing. There had to be an initial force to set the universe into motion. Einstein refers to this force as “the cosmological constant”. This constant corrected Einstein theory of relativity to explain the movement of the universe. Originally Einstein believed that the universe was static even though his mathematical theories suggested otherwise. It was not until another mathematician

Friedman, solved Einsteinium’s equation of general relativity using the cosmological constant. Einstein referred to this mistake as being the “biggest blunder” of his life. As a human how would I recognize God even if he came and revealed himself to me. For all I know the other worldly being could be Satan. (He is described in the bible as being a beautiful angel) If I could not even recognize God in his presence what hope do I have of finding any direction In life. How do we know what is important. Ask enough people. (Belief in a meaning of life)How do we know that we are good.

If being good is so important how do we define “good”. (So we know what it Is that we are trying to do) Being good. How can you remove evil without being evil yourself. The importance of evil and good existing at the same time. (Creates the great struggle) The misconception of trying to “faith” our way Into heaven. (Why Baptists and Big Bang Atheists are essentially the same) Why should the meaning of life be so hard to find that we have to use faith to explain It. Association between wealth and power. Wealth allows you to have power over another mans will.

Any time you arches something with money you are taking something that many people want and deciding that you deserve It for yourself. Wealth allows you to take a larger share for yourself. (Jesus and the rich man) God exists In the “permanent state of being” (a state of being outside of time where no change occurs), In this realm of existence evil has been abolished by God. So In order to enter this state we also must be free of the evil within ourselves. God Is a being outside of time and Is the perfect embodiment of good. For everything to be good In God’s state of being that means evil has to be removed. It Is a requirement.

You can gain access to the elf menu, for the quantum lab, by clicking on the bell in the stockroom. The general features of the inorganic simulation include 26 actions that cam be added to test tubes in any combinations, 11 reagents that can be added to the test tubes In any sequence and any number of times. The actions are located in the stockroom. You can gain access to the help menu, for the Inorganic lab, by clicking on the bell in the stockroom. Purpose You will learn to work in the Virtual Laboratory. Keep accurate records. Record your observation In the notes portion of the report.

Procedure Part 1: Once the program has loaded, enter the quantum lab. Enter the stockroom. Note the bell on the counter. Click on the bell to gain access to the help screens for this lab. Become aware of what the help screen has to offer. Exit the help screen. “Play-around” with the lab and learn the features available. Part 2: Exit quantum lab and enter Inorganic lab. Click on the TV handle in the top left side of the virtual lab. A screen will drop. This screen provide the current chemical status of what is contained in your selected test tube. Enter the stockroom.

Note the bell on the counter. Click on the bell to gain access to the help screens for this lab. Become aware of what the help screen has to For this lab, record the most important concept that you learned in the Notes section: Notes: The lab allowed me to view what everything is and how to use them. The most important thing that I learned was how to use this lab. Knowing how to use this program will benefit me with the other lab that I need to work on. I didn’t think that I would understand how to use the lab and this help but I still don’t understand this completely. VS..) Assignment – Thomson Experiment As scientists began to examine atoms, their first discovery was that they could extract actively charged particles from atoms. They called these particles electrons. In order to understand the nature of these particles, they wanted to know how much they weighed, and how much charge they carried. Thompson showed that if you could measure how much a beam of electrons were bent in an electric and magnetic field, you could figure out the ratio of mass to charge for the particles. You will repeat some of Thomson experiments in this lab.

Procedure / Observations 2. Enter the Quantum Lab in VS… Set up the optics table for this experiment by selecting Thomson Experiment on he clipboard (in the stockroom). What source is used in this experiment Electron gun What type of charge do electrons have? Negative What detector is used in this experiment and what does it do? A Phosphor Screen Push the grid button on the phosphor screen, then turn on the magnetic field to 3. 30TH (micro-Taste, measurement of magnetism). What happens to the spot from the election gun? Which way did it shift) Moved to 4. Turn off the magnetic field, and turn on the voltage of the electric field to VIVO. What happens to the spot from the election gun? (which way did it shift) Moved to the left. In an electric field, the displacement of the electrons is related to their charge, mass, and velocity. The purpose of the Thomson experiment is to calculate the mass to charge ratio of the electron. The displacement of the electrons can be observed in this experiment, and the velocity can be calculated from the electric and magnetic fields.

The forces produced by the electric and magnetic fields are CEQ and q 0 Vs.. B, respectively (where q is the charge of the electron, V is its velocity, E is the electric field, and B is the magnetic field). If the electric and magnetic forces are equal, then he velocity of the electron can be calculated from E and B (V=E/B). What two fundamental properties of the electron does its displacement depend on? Mass and Velocity Where should the signal on the phosphor screen be if the electric and magnetic forces are balanced? In the dead center Increase the voltage of the electric field until the signal reaches the edge of the 5. Hockshop screen What voltage is required to deflect the electrons to the edge of the screen? 1 5. V Increase the magnetic field until the beam of electrons reaches the center of 6. The screen. What magnetic field creates a magnetic force that balances the electric force? 0. 0 When the electrical and magnetic forces are equal, what does the ratio of the electric field to magnetic field (E/B) give? 2. 48 x 105 Increase the electron gun energy to 500 eve 7. How does increasing the electron gun energy change the speed of the electrons?

It moves to the right 1. 5 CM What voltage is required to deflect the electrons to the edge of the screen? Move than 999 eve than seen in the earlier experiment? It required more voltage because of the starting point Discussion Thompson lab was successful in showing that the mass and velocity are directly elated and they show the correlation between the magnetic forces being equal. This lab showed us how to accurately calculate the electron displacement theory. To calculate this you use E & B with the formula V=E/B. In our lab we got 2. 48 x 105 .

Increasing our electron gun moved the electron speed to the right which showed the increasing electron speed. To increase the electrons completely to the edge of the screen which shows highest electron charge you’d need to increase it to 999. You need the increased voltage and eve because it needs all the positive charged electron and electricity to increase the speed and voltage. (VS..) Assignment – Milliken Experiment In the Thomson experiment, you discovered that you can use the deflection of an electron beam in electric and magnetic fields to measure the charge-to-mass ratio of an electron.

If you then want to know either the charge or the mass of an electron, you need to have a way of measuring one or the other independently. Milliken and his student Harvey Fletcher showed that they could make very small oil drops and deposit small numbers of electrons on these drops. (1 to 10 electrons). They would then measure the total charge on the oil drops. You will get chance to repeat their experiments. Set up the optics table for this experiment by selecting Milliken Oil Drop Experiment on the clipboard (in the stockroom).

Electron gun, oil mist and camera How does this source affect the oil droplets in the oil mist chamber? It doesn’t effect it What do you observe from the video camera screen? Do all the oil drops fall at the same speed? No some fall fast and some fall slow. What force causes the drops to fall? Gravity causing the drops to fall The oil drops fall at their terminal velocities. The terminal velocity depends on the radius of the drops. By measuring the velocity of a droplet, the radius can be calculated. Then the mass of the drop can be calculated from its radius and the density of the oil.

Why do the droplets fall at different velocities? Because of the radius of the droplets 3. Turn on the electric field to 400 V. What do you observe on the detector screen? That some of the oil droplets still fall and the other rise at a rapid speed What type of charge do the drops have? Negative charge The force exerted on an oil drop by the electric field depends on the amount of charge deposited on the drop, since the force on a charged particle is CEQ. Each drop has a certain number electrons attached to it, so the charge on each drop is an integral multiple of the charge of an electron.

By calculating the charge on several droplets, the charge of an electron can be determined. Besides the gravitational force, what other force affects the velocity of the charged oil drops. The voltage being increased began to exert more force upon the oil droplets which caused them to have an increased electron number attached increasing the droplets force exerting them up and down Will this force have more or less of an effect if the oil drop has more deposited electrons? Why? It will have more because it increases the electron charge causing them to go up and down.

We were able to successfully reenact Milliken and Harvey Fletcher ability to show the current between oil drops and the electron deposits on them. Upon misting of respond much at all. They were very slow and only fell down with gravity. There wasn’t enough to increase the electron charge within. Upon increasing of the veto 400 eve were able to see the positive charge that the oil drops obtained. This increasing the electron charge and causing the oil droplets to not only fall but also ounce back up due to their positive charges within. VS..) Assignment – Rutherford Backscattering Experiment A key experiment in understanding the nature of atomic structure was completed by Ernest Rutherford in 1911. He set up an experiment that directed a beam of alpha particles (helium nuclei) through a gold foil and then onto a detector screen. According to the “plum pudding” atomic model, electrons gloat around in a cloud of positive charge. Based on this model, Rutherford expected that almost all the alpha particles should not be deflected, but he expected a few to be slightly fleeted by electrons.

However, he observed that alpha particles emerged at all angles, even straight backwards. He described the as “. … Almost as incredible as if you fired a 15-inch shell at a piece of tissue paper and it came back and hit you. ” He suggested that the experiment could be understood if almost all of the mass of an atom was concentrated in a small, positively charged central nucleus. In this experiment, you will make observations similar to those of Professor Rutherford. Set up this experiment by selecting Rutherford Backscattering on the clipboard (in the stockroom). Phosphor screen What are alpha particles?

Helium nuclei, which each have two protons, and two neutrons with a charge of +2 What detector is used in this experiment and what does it do? Phosphor screen detects charged particles like electrons and it glows momentarily at the positions where the particles impact the screen What is the signal in the middle of the screen? The alpha particles coming straight through the gold foil UN deflected or only slightly deflected What do the other signals on the screen mean? There are other momentarily spots of light these represent hits from alpha particles being deflected at small angles

Are most of the alpha particles undetected or deflected? Undetected According to the “plum pudding” model, what causes the slight deflection of some of the alpha particles? As the positively charged alpha particles pass through the gold atom, they are attracted to negative electrons and their path is slightly bent. 3. Now move the phosphor screen to the front left of the optics table in order to detect backwards scattering. What causes alpha particles to deflect backwards? A large mass in the center of the atom. How do the results of this experiment contradict the “plum pudding” atomic model?

The mass of the gold atom is not spread over the full atomic volume but concentrated in a central atomic nucleus. Are the atoms of the fold foil composed mostly of matter or empty space Empty space How does this experiment show that almost all the mass of an atom is concentrated in a small, positively charged central nucleus? Most of the alpha particles came straight through with little or no deflections, but there was the occasional large deflection. Electrons, the path being slightly bent Why did Rutherford conclude that almost all the mass of an atom must be concentrated in a small, positively charged central nucleus?

Most of the alpha particles came straight through with little or no deflections, but there was the occasional large deflection. If the mass of an atom were not concentrated, the number of deflections would be smaller and there would be no appearance of large deflections. The lab was to prove that particles are UN deflected and controlled by electrons. We were able to show how particles move, and we were able to describe them and incur that with the gold foil it actually deflected the atoms, causing their shapes to be seen. This proves that the atoms must be positively charged electrons

Wart also learned from his experiences as a snake that snakes weren’t deaf at all, they can still hear using one/ two ear(s). Wart then met a serpent named T. Natural, a patient and gentle serpent who taught Wart about snakes, history, and legends. T first told Wart about his education being neglected as a snake and how he can’t distinguish a T. Natural. Wart was then told about the reptile’s history, including the two families Totalitarians manias and the Curator’s incisors.

The Atlanta family had very huge descendants, while the Cerate family was about 17 feet long, but razor sharp teeth that were giant. The serpent T told Wart about these two families and how they constantly battled and flee from each other. T then told Wart about how the python lost its venom. The python released his venom in fury after he saw that he transported humans to the 7th heaven. The poison then fell onto trees, water snakes, frogs, and cobras. In order to prevent chaos, the leader Aunt E told the venomous animals to use their poison in self defense.

The frog and water snake did not agree, so they lost their poison due to water. Wart learned many things from his experience as a snake talking to other snakes. Annotations: 1. In chapter 15, why was Sir Sector so upset that the King sent hunters to kill boars in the forest? Sir Sector argued that he wanted to instead hunt down the boars with his own team and hounds and supply the king. This is unreasonable because the hounds or hunters can be killed in a boar hunt, so Sir Sector should be grateful that he King is sending his own men and dogs to hunt.

I think the only reason Sir Sector is angry is because he has to supply and nourish the hunters and their dogs until the goal Is achieved. 2. On the bottom of page 194, what Is the song that is being sung? I don’t know how to Interpret this as a song except for the rhyming such as puddle and fuddle. There are many slash marks and weird words such as, “E could ‘rent alp It,’ e AD to. This is too confusing and I have no idea to what it may be. 3. On page 185,