System Energy & Power 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!

Page 1

Question 1 1. To do twice as much work in the same amount of time, how much power is required?

Question 2 2. What is the standard unit of power?

Question 3 3. How much power is required to do 100 J of work in 10 s?

Question 4 4. Which of the following scenarios will most likely require MORE power?

Question 5 5. If all of the objects have around the same mass, which of the following objects has the most gravitational potential energy?

Page 2

Question 6 6. If a car is rolling naturally downhill without the engine running, what energy transfer is happening?

Question 7 7. A 10 kg bowling ball is lifted from the ground to a height of 1 meter. Assuming the bowling alley is on Earth, how much gravitational potential energy does it now have?

Question 8 8. You lift a 3kg dumbbell from the ground until it is above your head, at a height of 1.5 meters. How much energy did you use in the process? (Assume that you're not a space alien, and your gym is on Earth.)

Question 9 9. If 1 cal = 4.186 J, how many joules is 10,000 calories?

Question 10 10. Which of the following conversion factors is correct?

Page 3

Question 11 11. If you cook something in your 2,000 W microwave for 2 hours, how many kWh did it use?

Question 12 12. If 1 Btu = 252 cal, how many Calories are in 10 Btu?

Question 13 13. Which of the following is the formula for elastic potential energy?

Question 14 14. Why is Hooke's law important for finding elastic potential energy?

Question 15 15. To find the formula for elastic potential energy of a spring we need to know the spring constant and the displacement of the spring. What exactly do we mean by displacement of the spring?

Page 4

Question 16 16. Elastic potential energy is the energy an object has in it due to being what?

Question 17 17. Which of the following is a common unit that is used to measure energy?

Question 18 18. Which of the following types of energy does the sun use to heat up our atmosphere?

Question 19 19. Which of the following is an example of mechanical energy?

Question 20 20. Which of the following is a property of energy?

Page 5

Question 21 21. Which of the following is an example of potential energy and not kinetic energy?

Question 22 22. Consider a ball at the end of a string. If the ball is swinging back and forth, at what point in the swing would the ball have the most potential energy?

Question 23 23. A bike resting at the top of a hill would be an example of what type of energy?

Question 24 24. To which of the following variables is kinetic energy proportional?

Question 25 25. Which one of the formulas best describes ''power''?

Page 6

Question 26 26. How do we know that gravitational potential energy exists?

Question 27 27. A Btu is the amount of heat needed to ___the temperature of ___ of water by ___.

Question 28 28. Both the equations for Hooke's law, and elastic potential energy have a constant called the spring constant in them. What is the spring constant?

Question 29 29. Which of the following is the best definition for energy?

Question 30 30. Different types of energy can be categorized as either kinetic or potential.

System Energy & Power 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!

GCSE Physics: Practice & Study Guide  /  Science Courses
Support