Unit 12 (1-10)
Order by
39 terms
Terms | Definitions |
|---|---|
 What is water called when it is a gas? | Water Vapor |
| What is evaporation? | Changing of a liquid to a gas |
| What is transpiration? | Process by which plants give off water vapor into the air |
| What is capacity? | Amount of material something can hold |
| What is humidity? | Amount of water vapor in the air |
| What is saturated? | Filled to capacity |
| What is specific humidity? | Actual amount of water in the air |
| At which temperature will air hold more water vapor, 10C or 25C? | 25C |
| What is a psychrometer? | Instrument used to find relative humidity |
| What is relative humidity? | Amount of water vapor in the air compared to the amount of water vapor the air can hold at capacity |
| How do you find relative humidity? | 1) Find the difference in the temperature of the dry and wet thermometer 2) Find the temperature of the dry thermometer 3) Humidity Chart |
| What is condensation? | Changing of a gas to a liquid |
| What is dew point? | Temperature to which air must be cooled to reach saturation |
| What is frost? | Ice formed from condensation below the freezing point of water |
| What process forms clouds? | Condensation |
| What are cirrus clouds? | Light, feathery clouds |
| What are cumulus clouds? | big, puffy clouds |
| What are stratus clouds? | Clouds that form layers across the sky |
| What is fog? | A cloud that forms near the ground |
| What are the two main forms of precipitation? | Rain and snow |
| What is precipitation? | Water that falls to the earth from the atmosphere |
| What is a rain gauge? | Instrument used to measure precipitation |
| What is an air mass? | A large area of air that has the same temperatureand amount of moisture |
| What is polar air mass? | Air mass that forms over cold regions |
| What is a tropical air mass? | Air mass that forms over warm regions |
| What are air masses that form over water called? | maritime (moist) |
| What is a cold front? | Forward edge of a cold air mass, formed when a cold air mass pushes under a warm air mass |
| What is a front? | Surface between different air masses |
| What is a warm front? | Forward edge of a warm air mass, formed when a warm air mass pushes over a cold air mass |
| What is a hurricane? | Tropical storm with very strong winds |
| What are thunderstorms? | A storm with thunder, lightning, heavy rain, and strong winds |
| What is a tornado? | A small, very violent funnel-shaped storm |
| What is lightning? | A giant storm cloud that gives off electricity |
| What is the eye of a hurricane like? | Calm, no wind or rain |
| What is a millibar? | A unit of measurement for air pressure |
| What is a station model? | A record of weather information at a weather station |
| What are meteorologists? | Scientists that study weather |
| What are isobars? | Lines on a weather map that connects points of equal air pressure |
| What is a weather map? | A map that shows weather conditions for many places at one time |
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