| A | B |
|---|
| Why is it warmer near the ceiling than the floor? | Convection (hot air rises) |
| Why does a wire become hot when only one end is heated? | Conduction of heat |
| Why are furnaces in the basement? | So the heated air can rise (convection) |
| What are the 3 methods of heat transfer? | Conduction, Convection and Radiation |
| By what method does heat reach Earth from the Sun? | Radiation |
| What is the only way heat can travel through empty space? | Radiation |
| Why do hot fluids rise? | Hot fluids are less dense |
| In what direction does heat move? | Heat always moves from hot to cold |
| Does cold enter your hand when you touch an icicle? | No, heat moves from your hand into the icicle |
| What do you call objects that let heat travel through them easily? | Conductors |
| What do you call materials that do not let heat pass through them easily? | Insulators |
| When objects heat up, what happens to the speed of their molecules? | The molecules speed up |
| Can two objects have the same temperature but not the same heat? | Yes (more mass means more heat) |
| What does the Greek letter delta mean? | Change |
| What is the delta if some water raises from 15C to 20C? | Delta = 5C |
| Is air a good conductor of heat? | NO |
| If you mix equal amounts of 12C water and 22C water, what is the temp of the mixture? | 17C |
| If you mix a lot of 60C water with very little 50C water, where will the temp of the mixture windup? | Very near 60C |
| Do thermometers measure heat? | NO! They measure temperature |
