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Unit 5
Introduction to Energy
| Question | Answer |
|---|---|
| energy | The ability to do work; to move, or change matter |
| kinetic energy | energy in motion |
| potential energy | stored energy |
| three factors that affect the amount of potential energy | height, mass and elasticity (spring and rubber band) |
| gravitational potential energy | potential energy associated with the height of an object |
| chemical energy | form of potential; the energy stored in the bonds between atoms that make up matter |
| batteries, food, gasoline, candles and logs are forms of | chemical energy |
| heat energy | form of kinetic energy; involves the motion of the molecules that make up matter |
| radiation from a campfire, freezing, boiling water and friction are forms of | heat energy |
| electromagnetic energy (EM) | form of kinetic energy; involves energy from space made up of electric and magnetic waves |
| sunlight, color, x-rays, radio waves and microwaves are forms of | electromagnetic energy (EM) |
| electric energy | form of kinetic energy; involves energy from moving electrons |
| electricity, lightning, appliances with a power cord are forms of | electric energy |
| mechanical energy | form of kinetic energy; involves energy of moving objects |
| running, driving a car down the street, pedaling a bicycle are forms of | mechanical energy |
| Law of Conservation of Energy | energy cannot be created or destroyed but can be changed (converted or transferred) from one form to another |
| Identify the energy conversion that happens when a plant uses the sunlight for photosynthesis. | electromagnetic (sunlight) --> chemical (glucose food) |
| Identify the energy conversion that happens when you use your legs to pedal a bicycle. | mechanical (moving legs) --> mechanical (bicycle moving) |
| Identify the energy conversion that happens when you fill your car with gasoline to make it move down the street. | chemical (gasoline) --> mechanical (car moving down the street) |
Created by:
Mrs. Dormitzer