| A | B |
|---|
| What is air pressure? | The push of air against its surroundings. |
| Where are particles of air closest together? | Near sea level. |
| What is the device used to measure air pressure called? | Barometer. |
| When air in the atmosphere is warmed, what happens to air pressure? | Air pressure gets lower. |
| When air in the atmosphere is cooled, what happens to air pressure? | Air pressure gets higher. |
| Differences in air pressure can cause what? | Winds |
| What two things can make wind stronger? | When the difference in pressure between two areas is great and when high pressure and low pressure areas are close together. |
| What is a wind blowing from the east to the west called? Why? | East wind because winds are named by the direction the wind blows from. |
| What is a wind vane? | A device used to find wind direction. |
| When a wind vane points to the east, the wind is blowing from what direction? | East |
| What is a windsock? | A cloth bag that is narrow at one end and open at both ends. |
| When the narrow end of a wind sock points to the east, the wind is blowing from what direction? | West |
| What is an anemometer? | A device used to measure wind speed |
| What is the Beaufort Scale? | A scale dividing wind strength into 12 forces |
| Why is wind power a good answer to today's energy needs? | It can't be used up and it doesn't pollute the air. |
| What is a problem with wind power? | The wind doesn't always blow. |
| What is humidity? | The amount of water vapor in the air. |
| When do you feel warmer, when the humidity is high or low? Why? | high because the air is already holding so much moisture that the sweat cannot evaporate from your body. |
| What is a cloud? | Billions of tiny drops of water that condensed from the air. |
| When do clouds form? | When water vapor in the air condenses. |
| What is fog? | a cloud that touches the Earth's surface |
| What is precipitation? | Any form of water that falls from the air to the Earth's surface. |
