| A | B |
|---|
| Why is the Earths surface heated unevenly? | The sunlight hits the Earth at different angles. |
| What is a thermometer | a tool for measuring air temperature |
| What is the liquid used in thermometers? | mercury |
| What are the two degree used as measurements on thermometers? | Celcius and Fahrenheit |
| At which temperature does water freeze and boil on Celcius? | Water freezes at 0 degrees C, and it boils at 100 degrees C. |
| At which temperature does water freeze and boil on Fahrenheit? | Water freezes at 32 degrees F, and it boils at 2l2 degrees F. |
| Which will heat up faster on a hot day, pavement or grass? | The pavement will heat up faster. |
| Does the sunlight heat the air? | No, the sunlight heats the Earth's surface, which then heats the air above it. |
| When will air temperatures be the hottest? | Air temperatures will be the hottest in the late afternoon. |
| Describe particles of warm air. | Particles of warm air are spread farther apart, so the air is lighter and rises. |
| Describe particles of cold air. | Particles of cold air are closer together, so the air is heavier and sinks. |
| Why is air pressure higher at the Earth's surface than on a high mountain? | There is more air pressing down on objects at the Earth's surface. |
| What causes wind? | Wind is caused by air moving from a high-pressure area to a low-pressure area. |
| air pressure | the amount that air presses or pushes on anything |
| What is a low-pressure area | a place where warm air rises and pushes down on the Earth's surface with less pressure |
| What is a high-pressure area | a place where cool air sinks and pushes down on the Earth's surface with more pressure |
| The air will be warmer or colder near the ground? | The air will be warmer. |
| As you go higher above the Earth, the air gets ________ | colder. |
| What is a barometer? | a tool that measures air pressure |
| What is a wind vane? | a tool that shows wind direction |
| What is an anemometer? | a tool that measures wind speed |
| range | the difference between the highest and lowest numbers in the data |
| mode | the number that occurs most often in the data |
| median | the middle number when the data is put in order |
| How does mercury rise and fall? | When the air around the mercury is heated, the mercury rises (expands). When the air around the mercury cools, the mercury drops (contracts). |
