**ENERGY FLOW AND SYSTEM**

**Select the correct term to complete the sentences.**

**chemical energy**

**nuclear energy**

**horsepower**

**watt**

**joule**

**mechanical energy**

**electrical energy**

**power**

**efficiency**

**energy conversion**

**steady state**

**thermal energy**

**second law of thermodynamics**

**food chain**

**radiant energy**

**1. Light is a form of ____.**

**2. ____ results from splitting or fusing atoms.**

**3. Energy stored in a candy bar is an example of ____.**

**4. ____ can be used to do work whenever there is a temperature**

**difference.**

**5. Kinetic and potential energy are both forms of ____.**

**6. ____ is the amount of energy changed divided by the time it takes.**

**7. One ____ is equal to one joule per second.**

**8. One ____ is equal to 746 watts.**

**9. When work is done by heat flowing, the output work is always less**

**than the amount of heat that flows. This is a statement of the ____.**

**10. The flow of energy almost always involves ____.**

**11. ____ means there is a balance between energy in and energy out so**

**the total energy remains the same.**

**12. A ____ is a way of describing the flow of energy between living**

**things.**