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Science Flash Cards

TermDefinition
Atmosphere The mixture of gases that surrounds earth.
Air pressure The measure of the force which particles in the air on an area of the surface.
Troposphere Lowest part of the atmosphere where weather occurs.
Stratosphere Contains ozone layer. the layer above the troposphere.
Mesosphere Third layer of the atmosphere protects us from meteorites.
Ionosphere Fourth layer of the atmosphere reflects off radio waves.
Exosphere Finally leaving the atmosphere of gases.
Thermosphere The Ionosphere and exosphere in one group. Last bit of heat
Ozone layer Protects us from harmful rays, gives us warmth, liquid H2O, and oxygen.
Greenhouse effect gases in the atmosphere give infrared radiation.
Temperature The measure of the average amount of kinetic energy.
Thermal energy The total amount of kinetic energy of particles.
Thermal expansion The increase of volume that result from and increase of temperature.
Heat The energy that is transferred between objects that are different temperatures.
Radiation Transfer of energy as electromagnetic waves.
Convection Transfer of energy due to the movement of matter.
Conduction The transfer of energy from one object to another by direct contact.
Wind The movement of air caused by differences in the air pressure.
Coriolis Effect The curving effect of a strait wind path due to the earths rotation.
Jet stream Narrow belts of high speed winds that blow from west to east.
Local wind The movement of air over short distances.
Sea breeze The cold breeze coming from the sea to the warmer land because of low pressure and water heats up slow. (During day)
Land breeze The cool breeze coming from the land to the sea because of lower pressure. (during night)
Mountain breeze The wind going a faster speed going down the mountain slopes. Do to the difference in air pressure
Valley breeze This breeze goes up the mountain from the bottom of the valley slowly. Do to the difference in air pressure.
Global wind Winds that travels long distances.
Trade winds Winds that travel west due to the rotation of the earth.
Westerlies Winds that travel west to east due to the rotation of the earth.
Polar Easterlies Really cold winds that move to the west due to the rotation of the earth.
Doldrums When winds meet at the equator calmly.
Horse latitudes calm areas of 30 degrees latitude wind.
Weather The condition of earths atmosphere at a certain time and place.
Humidity The amount of water vapor in the air.
Relative humidity Comparison of water vapor in the air vs. the amount needed to reach saturation.
Dew point The temperature of which more condensation than evaporation occurs
Precipitation Any form of water that falls on to earth's surface from the clouds.
Cirrus The are feathery or wispy clouds made of ice crystals.
Cumulus A pile of clouds in usually good weather.
Stratus Spread out clouds formed in layers.
Air pressure The force of air molecules pushing on an area.
High pressure system Air sinks slowly down large areas and change slowly. Winds move clockwise sunny weather.
Low pressure system Air rises and cools causing rainy weather. Winds move counterclockwise.
Air mass A large volume of air in which temperature and moister are the same.
Front When one air mass runs into another.
Warm front When warm air molecules retreat with cold molecules. Warm air has the circular shapes on the line for weather maps. Cold air in the front warm air in the back.
Cold front When cold air pushes up the warm air while retreating. Warm air in the front cold air in the back. Cold air has the pointy triangles on the line for the weather maps.
stationary front When there is not enough wind so both airs stay in one place causing rain. Both the circles and triangle are on one line for the weather maps.
Occluded When a cold and warm front collide causing a storm (rare) The triangles and circles are on two separate line facing each other.
Evaporation When a liquid water change into water vapor.
Condensation The change of a gas to a liquid. Forming clouds.
Runoff Streams, rivers, and lakes that run through land.
Created by: Slyscotty18