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Earth Science Chapter 17
Vocabulary for Chapter 17
15
Science
9th Grade
03/23/2010

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Term
Air Polutant
Definition
any airborne gas or particle that occurs at a concentration capable of harming living things or disruption of environment funtions
Term
Conduction
Definition
transfer of heat or another from of energy from one particle to another
Term
Convection
Definition
transfer of heat energy in a liquid or gas through the circulation of currents; densities
Term
Heat
Definition
total kinetic energy of all the particles of a substance
Term
Insolation
Definition
solar radiation that reaches the Earth; energy from the sun
Term
Ionosphere
Definition
portion of the thermosphere where the air is highly ionized due to the effects of UV rays
Term
Isotherm
Definition
line drawn on a weather map through places having the same atmospheric temperature at a given time
Term
Mesosphere
Definition
layer of Earth's atmosphere between stratosphere and thermosphere; lower temperatures
Term
Ozone
Definition
molecule of oxygen that consists of three oxygen atoms
Term
Radiation
Definition
transfer of energy through space by electromagnetic waves
Term
Stratosphere
Definition
layer of Earth's atmosphere between troposhere and mesosphere; ozone, temp increases with altitude
Term
Temperature
Definition
measure of the average kinetic energy of the atoms or molecules in a substance
Term
Temperature Inversion
Definition
increase in temperature with an increase in altitude; when a layer of cold air is trapped beneath layer of warm air
Term
Thermosphere
Definition
layer of Earth's atmosphere above the mesosphere; increase temperatures with altitude
Term
Troposphere
Definition
lowest layer of Earth's atmosphere; decreasing temperature with altitude
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