| A | B |
|---|
| energy (3, 4, 5) | the ability to do work |
| work | movement caused by energy |
| heat | a form caused by motion of molecules |
| shadow | a dark or shaded area that appears when light is blocked |
| Transparent | allows light to pass through |
| opaque | not letting light through |
| phases of matter | solid, liquid, gas, plasma |
| melt | to change from a solid to a liquid |
| freeze | to change from a liquid to a solid |
| light energy (3, 4, 5) | energy that can be seen by the eye |
| chemical energy (3, 4, 5) | a form of energy that requires a fuel |
| Food chain | the passing of enery from one organism to another, plant to animial |
| food web | energy passed from many organisms to another |
| Electrical energy (3, 4, 5) | energy from charged particles |
| Mechanical energy (3, 4, 5) | a form of energy involing motion |
| Potential energy (3, 4, 5) | stored energy |
| Kinetic energy (3, 4, 5) | energy resulting from an object in motion |
| Sound energy (3, 4, 5) | a type of energy that travels in waves, can often be heard |
| vibration | a fast backward and forward motion, causes sound |
| wave | a motion that passes energy from one point to another, light, sound and heat eanergy travel in waves |
| pitch | the highness or lowness of a sound |
| volume | the loudness or softness of a sound |
| Temperature (3, 4, 5) | a measurement of heat or molecule motion |
| thermometer | a tool used to measure temperature |
| Celsiuis | a the metric unit of temperature, water freezes at 0celcius and boils at 100 celcius |
| renewable energy source (3, 4, 5) | a natural resource that is either never used up or can be replaced by new growth, solar, wood |
| nonrenewable energy source (3, 4, 5) | relating to a natural resource that cannot be replaced when it is used up, oil, coal |
| transformation (3, 4, 5) | changing from one form to another |
| conservation | the protection and management of natural resources |
| Energy flow | the path of energy through a system |
| circuit | a pathway for electrical energy |
| series circuit | a circut with only one pathway for energy to flow |
| parallel circuit | an electrical pathway with more than one path for the energy to flow |
| conductor | a material that allows energy to flow |
| convection | the movement of heat energy through a current |
| conduction | the movement of heat energy through a material |
| radiation | the movement of heat energy through air and space |
| switch | a device that allows or shuts off the flow of energy |
| filament | the part of a lightbulb that glows |
| fossil fuel | nonrenewable energy source formed millions of years ago from the remains of plants and animals |
| Alternate fuels | energy sources that are not fossil fuels, solar, nuclear, geothermal |
| solar energy | energy from the sun |
| nuclear energy | energy created by ththe fussion of atoms |
| geothermal energy | energy created from heat contained in rocks below the Earth's surface |
