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Thermal Energy
Test Review
| Question | Answer |
|---|---|
| Thermal energy is the transfer? | heat moving from a warmer object to a cooler object |
| Thermal energy transfer can happen in one of three ways; | conduction, convection, and radiation . |
| An insulator is a ? | poor conductor of energy |
| In conduction what happens? | heat is transferred from one particle of matter to another in an object without the movement of the object. |
| So we can say that in conduction we always have | contact, or material touching each other. |
| An example of conduction is a snowball in a hand because | the heat of the hand is making the snowball melt. |
| Metals are | excellent conductors of heat |
| non-metals are | not conductors of heat |
| In convection, heat is transferred through the movement of | currents |
| These currents can be fluids, such as | Water |
| These currents can be gases , such as | Air |
| Convection currents always move in a what kind of pattern? | Circular |
| What are ways to conserve energy? | b. Carpooling (riding with someone to work) c. Riding a bus or train (public transportation) d. Making more energy efficient vehicles |
| Which energy resources are mostly likely to have a negative impact or effect on air quality? | any that produce pollution when burned: coal for example_ |
| What are some factors to consider when deciding to use solar or wind power as a renewable energy? | _you need a backup system when there are cloudy days or there isn’t any wind for the turbines |
| What is a major disadvantage to using nuclear power to generate electricity? | requires expensive machinery to produce power, can be dangerous |
| What are the advantages to using fossil fuels, which is a non-renewable energy resource, to generate electrical power | relatively easy and inexpensive to mine and transport |
| An ice cube is dropped in a glass of water at room temperature. The temperatures of the glass of water will | Increase |
| while the temperature of the ice will | Decrease as the glass of water will increase. |
| The tools necessary to conduct an experiment in which you are measuring the rate of thermal energy transfer in several liquids include; a beaker, timer, hot plate, and a _ | thermometer |
| The transfer of thermal energy by electromagnetic waves is called | radiation |
| Hot air pouring from a heat vent is an example of heat transfer by | convection |
| Cooking eggs in a skillet is an example of thermal heat transfer by | conduction |
| When items need to be kept the same temperature in order to prevent the loss of heat, an | insulator |
| In radiation, thermal energy is transferred by electromagnetic | Waves |
| Radiation does not require ____________________ to transfer thermal energy. | Matter |
Created by:
spotsville2
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