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### 21 Cards in this Set

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• Back
 Temperature how hot or cold something is degree the unit of measurement for temperature heat a form of energy that makes things warmer insulator a material that heat doesn't travel through easily opaque does not allow light to pass through reflect to bounce off a surface cell a source of electricity circuit the path electricity flows through electric current electricity that flows through a circuit switch opens or closes an electric circuit A material that heat doesn't flow through easily is called a(n) insulator An object that light cannot pass through is opaque A thermometer is used to measure temperature A complete path for electricity to flow through is called a circuit To open or close an electrical circuit, you use a switch To see how hot something is, we measure its temperature When _______ flows to an ice cube, the ice melts. heat A flashlight gets electricity from a cell Heat, light and electricity are all forms of energy Heat, light and electricity are all forms of energy Heat is a a. form of energy b. compound c. gas d. collection of particles a. form of energy