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Science
Unit 7
| Question | Answer |
|---|---|
| Making an object move is a... | Change |
| The ability to cause change in matter | Energy |
| Everything that moves has... | Energy |
| Energy can be transformed from... | One form to another |
| Energy can be transferred from... | One location to another |
| Name examples of sources of energy. | Gasoline is a car's source of energy; the sun is a plant's source of energy; food is a human or animal's source of energy; electricity is a computer's source of energy |
| Energy of motion | Kinetic energy |
| The energy something has because of it's position/condition (at rest, not moving) | Potential energy |
| The total potential and kinetic energy of an object | Mechanical energy |
| Describe Light Energy. | Light energy can travel through space; plants use it for food; humans use it to see; electricity is a source of light energy |
| Describe Sound Energy. | Sound energy is made of vibrations (moving back and forth); it can move through gases, liquids and solids; it cannot move through space like light energy |
| This describes how high or low a sound is | Pitch |
| Do loud sounds have more or less energy than quiet sounds? | More energy |
| A form of energy that can be released by a chemical change | Chemical energy |
| Name examples of chemical energy. | Chemical energy from food gives us energy; gasoline is a form of chemical energy for cars; fire releases chemical energy to keep us warm |
| A form of energy that comes from electric current | Electrical energy |
| Where does electrical energy come from? | 1. generated by the chemical energy released when fossil fuels (coal and natural gas) are burned. 2. sun and wind also generate electrical energy |
| The total kinetic energy of the particles in a substance. It is contained in the moving particles that make up the substance. | Thermal energy |
| The faster the particles move, the more what the substance has? | Thermal energy |
| The measure of the average kinetic energy of the particles of the object | Temperature |
| The transfer of energy between two objects | Heat |
| What kind of energy do geothermal technicians work with and where does it come from? | Geothermal technicians work with geothermal energy which is a source of energy from Earth's hot surface |
| What do geothermal technicians do when they work outside? | They install and repair equipment that captures geothermal energy |
| Why is geothermal energy green energy? | Geothermal energy does not pollute the environment and it is a renewable energy source |
| What are some natural sources of geothermal energy? | volcanoes, geysers, and hot springs are natural sources of geothermal energy |
| A material that allows heat to move through it easily | Conductor |
| Why are solids better conductors? | The particles are packed closely together |
| Heat can move quickly from one particle to another through... | Vibration |
| Materials that do not conduct heat well | Insulators |
| What are good insulators? | Gases |
| What can be used to slow down the movement of heat? | Insulators |
Created by:
schmaltzla
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