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