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STAAR Science - Grade 8: Work & Energy Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. What is a joule?

Question 2 2. In the absence of friction, how much energy would be lost as a rollercoaster car goes down the first of several 'hills'?

Question 3 3. What type of energy transformation best describes the following situation: you jump off a diving board into a swimming pool?

Question 4 4. What does the law of conservation of energy state?

Question 5 5. Which of the following is NOT true about the work-energy theorem?

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Question 6 6.

Which of the following situations represents thermal energy being converted into another type of energy:

I. Boiling a pot of water

II. Starting an automobile engine

III. A windmill

Question 7 7. Which best describes 'work?'

Question 8 8. Which does not constitute a change in energy?

Question 9 9. What is rectangular approximation?

Question 10 10. How much work is done when you hold a 10 N object 10 m above the ground?

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Question 11 11. Which best describes a variable force?

Question 12 12. Which of the following situations is an example of a direct nuclear energy transformation to another type of energy?

Question 13 13. Which best describes work?

Question 14 14. Which best describes the work-energy theorem?

Question 15 15.

Which of the following can be converted into thermal energy:

I Nuclear Energy

II Electrical Energy

III Mechanical Energy

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Question 16 16. If you double the force on an object but the distance remains the same, how much work is done on that object?

Question 17 17. Why would a system have less energy than it originally started with?

Question 18 18. Which best describes potential energy?

Question 19 19. Which is not a component of work done on an object?

Question 20 20. Why does it take more work to stop a fast car than a slow one?

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Question 21 21. Why is potential energy called stored energy?

Question 22 22.

What types of energy can mechanical energy be transformed into?

I. Electrical Energy

II. Thermal Energy

III. Nuclear Energy

Question 23 23. What is a system?

Question 24 24. On a graph where force is on the y axis, and distance is on the x axis, a curve is applied to show the force and distance of a moved object. What does the area under the curve represent?

Question 25 25. For a linearly decreasing force, the best way to find the area under the curve is

STAAR Science - Grade 8: Work & Energy Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

STAAR Science - Grade 8: Test Prep & Practice  /  Science Courses
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