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Weather 7
| Question | Answer |
|---|---|
| Weather | Describes the conditions in the atmosphere at a specific time/place |
| What causes weather? | The uneven heating of the earth by the suns rays |
| In what layer does weather mostly occur in? | Troposphere |
| Air Temperature- | The amount of heat energy in the atmosphere at a place |
| Air Pressure- | The amount of force exerted by the air hitting a given surface area |
| Humidity- | The amount of water vapor in the air |
| Wind speed- | The rate of moving air |
| Wind direction- | The direction that the wind blows from |
| Precipitation - | Falling moisture from the clouds |
| Instrument to measure air pressure | Barometer |
| Instrument to measure humidity | Sling Psychrometer |
| Instrument to measure wind speed | Anemometer |
| Instrument to measure wind direction | Wind Vane |
| Instrument to measure precipitation | Rain Gauge |
| Condensation | Water going from a gas to a liquid (looses energy) |
| Evaporation | Water going from a liquid to gas (gains energy) |
| Transpiration | Evaporation of water from/out of plants |
| What is wind caused by | Differences in air pressure |
| Hot air ________ | Rises |
| Cool air ______ | Sinks |
| Low pressure= | Hot air rises |
| Cold air sinks= | High pressure |
| Large difference in air pressure= | Strong winds |
| Small difference in air pressure= | Weak winds |
| Coriolis Effect | Wind appears to curve to the right in the northern hemisphere |
| What causes the Coriolis Effect? | Earths rotation |
| Dew Point | The temperature at which water vapor condenses out of the air bc the air is saturated |
| How do clouds form? | When the air is cooled to the dew point and water condenses into tiny water droplets |
| How does precipitation occur? | Once the water droplets get too large they fall |
| Dark clouds mean what type of precipitation(usually)? | Storms/precipitation |
| Cirrus | High wispy clouds |
| Cumulus | Low puffy clouds |
| Cumulonimbus | Tall dark thunderstorm clouds |
| Stratus | Flat low clouds (gloomy) |
| Field map | A region of space that has a measurable quantity or value at every point |
| Isolines | Lines with the same field value |
| Isobars | Lines of equal air pressure |
| Isotherm | Lines of equal temperature |
| As latitude increases temperatures __________ | Decreases |
| An air mass that forms over water would be dry or moist? | Moist |
| An air mass that is over land would be dry or moist? | Dry |
| Air Mass | Air with generally uniform characteristics |
| Source region | Surface over which an air mass forms |
| Front | The boundary (on the ground) between 2 air masses |
| Arctic(A) | Formed over extremely cold, ice covered regions |
| Polar(P) | Formed over regions of high latitudes where temperatures are usually low |
| Tropical(T) | Formed over regions of low latitudes where the temperatures are usually high |
| Maritime(M) | Formed over water, moist |
| mP | Cold moist Formed over North Atlantic and North Pacific |
| mT | Warm,moist Formed over guild of Mexico, middle Atlantic, Caribbean, Pacific |
| Continental | Formed over land, dry |
| cA | Dry frigid Formed North of Canada |
| cP | Cold dry Formed over northern and central Canada |
| Ct | Warm dry Formed over southwestern US in summer |
| 5 air masses | Arctic Polar Tropical Maritime Continental |
| Cold front symbol | Triangles pointing towards where it's heading |
| Weather during a cold front: | Strong storms |
| Weather after the cold front | Cold Dry |
| Air masses typically move from _______ to _______ | west to east |
| Weather before cold front | Warm Humid |
| Warm front symbol | Circles facing the way the front is moving |
| Weather before warm front | Cold |
| Weather during warm front | Wet Rainy |
| Weather after warm front | Warm Humid |
| What is a cyclone | Inward and counterclockwise air circulation around a low pressure center |
| What is a hurricane? | Huge cyclonic storms (low pressure system) that form in the summer over warm ocean water |
| How do winds blow around a hurricane? | Counterclockwise around the center |
| What fuels a hurricane and gives it power? | The sun |
| Wind blows from _____ pressure to ______ pressure | High to low |
| Climate | Long term behavior of atmosphere |
| Layers of the atmosphere (from outer to inner) | Exosphere,ionosphere,mesosphere,stratosphere,thermosphere,tro-posphere |
| Relative humidity | Measure of the amount of moisture in the air compared to what the air could hold (how full of water the air is) |
| 100% relative humidity = | Precipitation is occurring |
Created by:
CJ120
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