1. Science 8-Chapter 3—Lesson 2
Energy Transformations and Work

2. energy can be transformed from one form to another, but it cannot be created or destroyed

3. law of conservation of energy
energy can be transformed from one form to another, but it cannot be created or destroyed

4. a force between two surfaces in contact with each other

5. friction
a force between two surfaces in contact with each other

6. relating to a natural resource, such as oil or iron ore, that cannot be replaced once it has been used

7. nonrenewable
relating to a natural resource, such as oil or iron ore, that cannot be replaced once it has been used

8. a series of chemical reactions that convert light energy, water and carbon dioxide into the food-energy molecule glucose and give off oxygen

9. photosynthesis
a series of chemical reactions that convert light energy, water and carbon dioxide into the food-energy molecule glucose and give off oxygen

10. the transfer of energy that occurs when a force makes an object move in the direction of the force while the force acts on the object

11. work
the transfer of energy that occurs when a force makes an object move in the direction of the force while the force acts on the object

12. thermal energy moving from a region of higher temperature to a region of lower temperature

13. heat
thermal energy moving from a region of higher temperature to a region of lower temperature

14. relating to a natural resource, such as solar energy or wood, that is never used up or that can be replaced by new growth

15. renewable
relating to a natural resource, such as solar energy or wood, that is never used up or that can be replaced by new growth

16. the conversion of one form of energy to another

17. energy transformation
the conversion of one form of energy to another