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PS Ch 6 Rev
Chapter 6 review for test
| Question | Answer |
|---|---|
| Refrigerators and air conditioners are examples of ____. | heat movers |
| Wind and ocean currents are formed by _____. | convection |
| A material that reduces the flow of thermal energy by conduction, convection, and radiation is a(n) ____. | insulator |
| All of the following are good conductors of thermal energy except : silver, copper, aluminum, air | air |
| The process by which engine fuels burn is ___. | combustion |
| Convection will most likely occur in ___. | liquids and gases |
| Conduction will most likely occur in ___. | solids and liquids |
| Radiation can occur without traveling through ___. | matter |
| Gasoline and diesel engines are ____. | heat engines and have internal combustion |
| Solar collectors are parts of ___. | active solar heating systems |
| Energy travels from the sun to Earth as ____. | radiant energy |
| Of the following (silver, copper, plastic, iron), the best insulator would be ____. | plastic |
| Temperature measures the ___ of the particles of a material. | average kinetic energy |
| Two equal masses of two different kinds of matter _____. | probably have different amount of thermal energy |
| Large windows on the south side of a building is an example of ___. | passive solar heating system |
| A pan of water heating on a stove is an example of ___. | conduction |
| A hot air balloon is an example of ___. | convection |
| The best conductor is ___. | copper |
| Fluids are ____. | liquids and gases |
| Good ____ do not allow heat to move through them easily. | insulators |
| On a hot day, which would stay cool longer, a sheet of aluminum whose specific heat is 920J/kgC or copper whose specific heat is 380 J/kgC? Why? | Aluminum, because it has a higher specific heat so it will take longer for it to heat up. |
| Freezing point of water in degrees Celsius. | 0 |
| Boiling point of water in degrees Celsius. | 100 |
| Freezing point of water in Kelvin | 273 |
| Boiling point of water in Kelvin | 373 |
| Freezing point of water in Fahrenheit. | 32 |
| Boiling point of water in Fahrenheit. | 212 |
| Explain this statement "When measuring the temperature of ice, you are measuring the amount of heat it is releasing" | All matter has particles that are in constant, random motion. When particles move they give off heat due to friction, even ice. |
| Heat moves from a ____ area to a ____ area. | warm to cool |
| Heat is measured in ___. | Joules |
| Why does water have such a high specific heat? | because of its strong bonds |
| What is the most common heating systems used today? | forced-air system |
| How does a refrigerator work to keep food cool? | it contains a coolant that is pumped through pipes on the inside and outside of the refrigerator, this special substance in the pipes evaporates at a low temperature. |
| Suppose you vigorously shake a bottle of fruit juice. Predict how the temperature of the juice will change. Explain. | the temperature of the juice will increase because the shaking causes the particles to move faster creating more friction. |
| Several days after a snowfall, the roofs of some homes on a street have almost no snow on them, while others are still snow covered. What would cause this difference? | the snow covered houses are better insulated so not enough heat escaped to melt the snow |
Created by:
jjones87
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