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FINAL 2: Weather
8th Grade Earth Science FINAL 2
| Question | Answer |
|---|---|
| How does air temperature change air pressure? | -Warm air expands, making it less dense so it rises causing LOW pressure. Warm air holds more moisture. -Colder air contracts, making it more dense so it sinks causing HIGH pressure. Cold air holds less moisture. |
| How does air pressure cause wind? | Difference in air pressure causes wind. Air moves from a HIGH pressure to a LOW pressure. -LOW Pressure is usually associated w/ cloudy, rainy weather. |
| How does the Coriolis Effect affect the Earth’s wind patterns? | Coriolis Effect--due to the Earth’s rotation, moving objects such as air and water will shift in a certain direction. |
| How does a pyschrometer work to measure relative humidity? | Psychrometer--a type of hygrometer that has a wet bulb thermometer & a dry bulb thermometer |
| What is the difference in how hail, snow, & freezing rain form? | -Hail:Form in cumulonimbus, Wind carry rain drops above freezing line, Rain freeze to ice, falls, Stronger wind = larger hail.-Freezing Rain:falls to ground, freezes on contact w/ surface. Snow:Cloud drop freeze in cloud and stick forming flakes. |
| What happens when a cold front collides with warmer moist air? | Cold front. -Fast in speed. -Form cumulus clouds. -Narrow frontal zone -Short, severe weather |
| How is lightning and thunder produced? | Online Source: Thunder is caused by lightning. When a lightning bolt travels from the cloud to the ground it opens a little hole in the air, called a channel. Light is gone the air collapses back in and creates a sound wave that we hear as thunder. |
Created by:
*BROOKE*
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