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46 Cards in this Set

  • Front
  • Back
Air pressure
The weight of the air pushing on everything around it
Temperature
The average speed of particles in a substance; heat
Atmosphere
The air that surrounds earth
Humidity
The amount of water vapor in the air
The layer of atmosphere were most weather happens is
Troposphere
This fact it does not affect air pressure
Wind
Rising air pressure means that
Clear weather is coming
A land breeze generally forms in the
Evening
Which absorbs heat faster land or ocean
Land
High-pressure system will bring what kind of weather
Sunny
Hygrometer measures
Humidity
Barometer measures
Air pressure
Wind vane measures
Wind direction
Anemometer measures
Wind speed
Rain gauge measures
Rainfall
Hygrometer measures humidity in
Percentage units
Barometer measures air pressure in
Inches/millibars or PSI
Windvane measures wind direction in
Compass direction
Anemometer measures wind speed in
Miles per hour
Rain gauge measures rainfall in
Inches
What percent of earths surface is covered in water
75% or 3/4
What percent of the Earth's water is saltwater
97% (oceans)
What percent of the earth water is freshwater
3%
What percent of Earth's water is fresh water and liquid
1% ( Lakes, ponds, springs, atmosphere, swamps underground water, rivers)
What percentage of Earth water is fresh water and solid
2% (glaciers and ice caps)
Evaporation is
Changing a liquid to a gas with heat
Condensation is
Cooling a gas into a liquid
Aquifer is
Is a natural underground water store
The water cycle is
A constant movement of water from Earth surface to the atmosphere and back. It allows us to recycle our water.
Five jobs of the atmosphere
1. Holds in heat
2. Holds the air that we breathe
3. Protects us from the suns radiation
4. Recycles Earth's water supply
5. Protects us from space rocks
The atmosphere is mostly made of
Nitrogen and oxygen gases
Other things in the atmosphere include
Dust, soot, pollen, carbon dioxide, and water vapor
Oxygen makes up what percent of the atmosphere
21%
Nitrogen makes up what percent of the atmosphere
78%
Other stuff makes up what percent of atmosphere
1%
Which "sphere" is closest to the earth
Troposphere where all the weather happens
How are clouds measured
By how high they are and their shape
Cirrus clouds are known for
Ice crystals
Cumulonimbus of clouds are known as
Thunder heads
Cumulous clouds are known as
Fairweather
Nimbostratus clouds
Are weather clouds that make rain and snow
The leading edge of an air mass is called a
Front
A warm front brings
Rain and warm temperature
The two things that determine climate are
Temperature and precipitation
The four factors that affect climate
1. Latitude
2. Elevation
3. Distance from large bodies of water
4. Landforms
Cold fronts cause
Bad storms and cold air