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Science - Unit V - Atmosphere

STUDY
PLAY
weather
the condition of Earth's atmosphere at a particular time and place
climate
Overall weather in an area over a long period of time
ozone
a form of oxygen that has three oxygen atoms in each molecule instead of two. protects us from dangerous ultraviolet radiation from the sun
chlorofluorocarbons
chemical substance, found mainly in liquid coolants, that damages the earth's protective ozone layer
carbon dioxide
a chemical compound made from one atom of the element carbon and two atoms of the element oxygen.
fossil fuels
Combustible materials such as oil, coal and natural gas that are composed of the remains of formerly living material.
Sun Protection Factor
a number that refers to how much longer skin protected by a sunscreen can be exposed to the sun before becoming red(conpared to unprotected skin)
sunspots
areas on the sun's surface that are cooler and less bright than surrounding areas, are caused by the sun's magnetic field, and occur in cycles
convection currents
the upward movement of warm air and the downward movement of cool air
global wind patterns
Air circulation at surface creates wind patterns (Earth's shape and rotation causes variable latitudinal wind deflections.)
greenhouse effect
process by which atmospheric gases trap heat close to Earth's surface and prevent it from escaping into space
global warming
An increase in the average temperature of the earth's atmosphere (especially a sustained increase that causes climatic changes)
density
mass per unit volume
barometric pressure
Pressure caused by the weight of the atmosphere. It decreases with increasing altitude.
relative humidity
The ratio of the amount of water in the air at a give temperature to the maximum amount it could hold at that temperature
salinity
measure of salt in water
UV radiation
damaging wave of light emitted by the sun - eads to cataracts in eyes, interferes with photosynthesis, kills phytoplankton, wakens the immune system
radiant energy
energy that travels in waves (includes solar energy, light energy)
El Nino
the name given to the periodic warming of the ocean that occurs in the central and eastern Pacific
Coriolis Effect
The way Earth's rotation makes winds in the Northern Hemisphere curve to the right and winds in the Southern Hemisphere curve to the left.
albedo
the reflective property of a non-luminous object