The New Way Things Work Test | Final Test - Hard

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This test consists of 5 short answer questions, 10 short essay questions, and 1 (of 3) essay topics.

Short Answer Questions

1. Why can a dog hear a dog whistle that humans cannot?

2. What is one step in creating liquid crystal displays?

3. Towards which direction do electrons move on a magnet?

4. How many different ways can waves be created by instruments?

5. What is white light?

Short Essay Questions

1. How is static electricity formed?

2. What are sensors and detectors? What do they measure?

3. Define the two types of waves that are discussed.

4. What is the input?

5. Explain how electromagnets keep machines running.

6. What is current electricity? What is required to generate it?

7. Where is the mammoth taken when it feels traumatized and then experiences first joy and then despondency?

8. How do some frequencies of electromagnetic wavers appear to our eyes? Which waves can we not see?

9. How is magnetism caused?

10. Define wavelength and frequency.

Essay Topics

Write an essay for ONE of the following topics:

Essay Topic 1

Discuss the following:

1) Explain the basic nature of all springs.

2) What are the three purposes of springs? Give an example of how a spring serves each purpose in a tool or machine. Explain how the spring serves the purpose.

3) When is energy stored in a spring? Give an example of this. What releases that energy?

4) Research the history of springs. When were they invented? By whom? Where? How were the first springs made? How are they made today? What materials have they used to make springs in the past? In the present? Are springs still an important item today? Give several examples of tools and/or machines that use springs. Can you explain how the spring functions in each?

5) Do you think a bungee jumper uses one or more principles of springs? Explain your response.

Essay Topic 2

Discuss the following:

1) Describe the effect of heat upon molecules and give an example.

2) What are the three ways heat travels?

3) Define thermal radiation.

4) Define conduction and give at least one example of it.

5) Define convection and give at least one example of it.

6) Discuss the rays which the sun emits. What happens when the rays reach an object?

Essay Topic 3

Discuss the following:

1) Using examples, explain how a heating element works and the principle(s) of physics behind the element working.

2) Explain how heat can be used to keep things cool. Be sure to discuss both the molecular principle related to cooling and the process of cooling itself in both an air conditioner and a refrigerator.

3) Research and discuss the cultural and environmental impact the ability to cool via an air conditioner and refrigerator has had.

(see the answer keys)

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