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Across
1. As an object falls freely in a ______ its total energy remains the same.
4. Elastic PE is the energy stored in a spring when it is____. 5. The energy an object has because of its motion is called ____ energy. 6. If the speed of an object is doubled , its KE will be_____. 9. 1 Joule is equal to ____ meter 11. Energy is measured in the same units as____. 12. Work is done when force____an object. 14. The heat gained by the cooler material is equal to the heat lost by the warmer material. (Law of conservation of _____ energy. 16. The unit of work is ________. 17. N/m is the unit for the____ ____. 20. Energy is found in many different____. (ex. heat, chemical) 22. Energy can be changed from one form ot another, but can not be _____. 24. The energy an object has owing to its position or condition is called ____ energy. 25. Energy can be changed from one form to another but can not be ______. (note. same hint as another word but there are 2 answers)
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Down
2. _____ energy is equal to the sum of the kinetic and potential energies of an object.
3. As the power of a machine increases, the time required to move an object a fixed distance____. 7. The PE of an object and its height above the ground have a(n) _____ relationship. 8. The energy in a closed system remains_____. 10. _____ Energy can be used to run an assortment of appliances. 13. When an object is lowered or raised , the force exerted by or against Earth's gravitational field is equal to the object's ____. 15. ____is the ability to do work. 18. A ball is thrown upward from the Earth's surface. While the ball is rising, its gravitational PE will_____. 19. Energy is a ____ quantity. 21. The unit of___is watts. 23. Elastic PE is also the energy stored in a spring when it is_____.
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