Env Sci Voc 3 Dew
core
Earth’s innermost layer – comprised of dense elements – radius 3,400km
crust
thin outer layer of Earth – less than 1% Earth’s mass
tectonic plates
glide across asthenosphere – continents located on them – site of most geologic activity
atmosphere
surrounds the Earth – mixture of gases (nitrogen, O2, CO2, etc.)
conduction
flow of heat from a warmer object to a colder one
troposphere
atmospheric layer nearest Earth’s surface- almost all weather occurs here
greenhouse effect
process in which gases trap heat near Earth – without ths Earth would be too cold to live
water cycle
continuous movement of water into the air, onto the land, and then back to water sources
salinity
concentration of dissolved salts in ocean
fresh water
3% of Earth’s water is this – most in form of glaciers and icecaps
biosphere
narrow layer around Earth where life can exist
open system
flow of energy in which BOTH matter and energy are EXCHANGED between a system and a surrounding environment
closed system
energy (such as from sun) enters the environment but DOES NOT make it out
geosphere
solid part of Earth’s interior – all rock, soils, and sediment on Earth’s surface
asthenosphere
layer beneath lithosphere -a plastic, solid layer of the mantle – slow moving rock flows here
stratosphere
layer above troposphere – ozone (O3) in this layer absorbs’s sun’s UV energy
mantle
layer beneath the crust- 64% of Earth’s mass
precipitation
large water droplets that fall as rain, snow, sleet or hail
condensation
water vapor that forms water froplets on dust particles that form clouds and fall as rain
lithosphere
Earth’s outer layer that includes the crust and uppermost part of the mantle – divided into tectonic plates
erosion
removal or transport of surface material by water or wind
ozone
molecule made up of 3 oxygen atomes – found in stratoshpere – absorbs UV radiation
radiation
transfer of energy across space and in the atmosphere
convection
transfer of heat by air currents
evaporation
process by which liquid water is heated by the sun and then rises into the atmosphere as water vapor
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