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35 terms

Earth Science MEAP Words

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air mass
a huge amount of air that is similar throughout
atmosphere
the layer of gases that surrounds Earth
chemical weathering
weathering that creates new materials
decomposer
an organism that breaks down dead plants and/or animals
deposition
process by which sediment is placed in new locations
dew point
temperature at which water starts to condense out of air
drought
prolonged and abnormal lack of ranifall
erosion
the moving of earth material by water, wind, ice, or gravity
fossil
remains of organisms that lived in a past time period
fog
condensed water vapor in cloudlike masses near the ground
groundwater
water beneath Earth's surface
humidity
a measure of the amount of water vapor in the air
humus
a substance in soil created by the breakdown of dead plants and/or animals
igneous
rock formed by the cooling of molten rock
landfills
places where waste is buried in large, plastic-lined holes
metamorphic
rocks that form by changing an existing rock with heat and/or pressure
ozone
a molecule made of three oxygen atoms
physical weathering
weathering that breaks bigger rocks into smaller ones
porous
full of pores allowing liquids to penetrate easily
relative humidity
the amount of water vapor in the air compared to how much could be in the air at that time
sedimentary
rock formed when layers of sediments harden over millions of years
temperature
average amount of kinetic energy in the molecules of a substance
topographic map
map that shows the surface features of the land with lines
altitude
the height above the ground
water vapor
water in the gas form
cold front
the leading edge of a cold air mass
lava
molten rock that reaches the Earth's surface through a volcano
magma
molten rock material under the Earth's crust
relief
the variations in elevation of Earth's surface
relief map
a map that shows the variations in elevation of Earth's surface
saturate
to soak, fill, or load to capacity
sediments
solid fragments that come from the weathering of rock
warm front
the leading edge of a warm air mass
water table
the level below which the ground is completely saturated with water
wetland
a lowland area, such as a marsh or swamp, which is saturated with moisture