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6.12 Mrs Jensen
Atmosphere
14
Science
6th Grade
01/05/2012

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Term
troposhere
Definition
contains 75%of the atmospheric gases, dust, ice, and liquid water and is where weather, smog, and clouds occur
Term
ionosphere
Definition
layer of electrically charged particles in the thermosphere
Term
ozone layer
Definition
stratospheric layer with a high concentration of ozone that protects Earth by absorbing harmful ultraviolet radiation
Term
ultraviolet radiation
Definition
type of energy that comes to Earth from the sun and is mostly absorbed by the ozone layer
Term
chlorofluorocarbons (CFCs)
Definition
group of chemical compounds used in refrigerators, aerosol sprays, and foam packaging that destroy ozone molecules
Term
radiation
Definition
transfer of energy by electromagnetic waves
Term
conduction
Definition
transfer of energy that occurs when molecules bump into each other
Term
convection
Definition
occurs in gases and liquids
Term
hydrosphere
Definition
all the water that is found at Earth's surface, of which 97% is salt water and only 3% is fresh water
Term
water cycle
Definition
the continuous movement of water between Earth's surface and the atmosphere through evaporation, condensation, and percipitation
Term
Coriolis effect
Definition
changes the direction of all free-moving objects to the right north of the equator and to the left to the south of the equator. It creates wind patterns across the world and results from the rotation of Earth.
Term
jet stream
Definition
narrow belt of strong winds that blows near the top of the troposphere
Term
sea breezes
Definition
daily movements of air created when cooler, denser air moving inland from the ocean forces warm air over the land to rise
Term
land breezes
Definition
nightly movements of air created when cold air over the land forces up the warmer air above the sea
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