Apologia Physical Science, Module 3 2
Terms
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- atmosphere
- the mass of air surrounding a planet
- atmospheric pressure
- the pressure exerted by the atmosphere on all objects within it
- homosphere
- the lower layer of earth's atmosphere, which exists from ground level to roughly 80 kilometers (50 miles) above sea level
- heterosphere
- the upper layer of earth's atmosphere, which exists higher than 80 kilometers (50 miles) above sea level
- troposphere
- the region of the atmosphere that extends from ground level to roughly 11 kilomethers (7 miles)above sea level
- stratosphere
- the region of the atmosphere that spans altitudes of 11 kilometers to 48 kilometers (30 miles)
- mesosphere
- the region of the atmosphere that spans altitudes of 48 kilometers to 80 kilometers (50 miles)
- jet streams
- narrow bands of high-speed winds that circle the earth, blowing from west to east
- heat
- energy that is being transferred
- temperature
- a measure of the energy of motion in a substance's molecules
- thermosphere
- the region of the atmosphere between altitudes of 80 kilometers and 460 kilometers
- exosphere
- the region of the atmosphere above an altitude of 460 kilometers
- ionosphere
- the region of the atmosphere between the altitudes of 65 kilometers and 330 kilometers where the gases are ionized
- barometer
- an instrument used to measure atmospheric pressure