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1 Ch - Phy Sc M 13B

Earth Science - Our Atmosphere and Beyond (Apologia Phy Sc M 13B)

QuestionAnswer
energy that is transferred as a consequence of temperature differences heat
a measure of the energy of random motion in a substance's molecules temperature
a gradual change in temperature temperature gradient
When an atom turns into an ion it has been ionized.
Heat is really ______________ energy that flows from one object to another. kinetic
A thermometer really measures the average speed at which the molecules of a substance are moving.
When you heat something up, you are ______________________ energy to it. transferring
exosphere, thermosphere, mesosphere, stratosphere, troposphere, the five distinct layers of the earth's atmosphere
The border between each layer is called a pause.
The Earth's atmosphere is divided into two regions called the homosphere and heterosphere.
The air in the homosphere is _______________, while the air in the heterosphere is not. uniform
mesosphere layer of the atmosphere 50 to 85 km above the earth; temperature tends to decrease as altitude increases; the air is very thin; most meteoroids burn up here
stratosphere layer of the atmosphere 12 to 50 km above the Earth; composed of primarily oxygen; temperature stays constant until at about 20 km, which is where the ozone layer is
troposphere lowest layer of the Earth's atmosphere; avg height of 12 km; contains almost all of Earth's water vapor, so most weather takes place here
In general, for every kilometer you in increase in altitude in the troposphere, you experience a 6.5 degree Celsius temperature decrease.
Ozone protects us from the ultraviolet rays by _____________ them before they reach the planet's surface. absorbing
ionosphere a very active region of the atmosphere where solar radiation ionizes gases
Radio transmitters can use the ionosphere to increase their range.
The most abundant gas in the air is nitrogen.
The two gases that are necessary for life are oxygen and carbon dioxide.
Earth's atmosphere forms a protective boundary that shields the earth from harmful solar radiation and meteorites.
Earth's atmosphere holds in heat and helps to moderate Earth's temperatures.
Earth's atmosphere is needed for the ___________ cycle and weather. water
Earth's atmosphere provides a medium in which ___________ can travel. sound
You shiver when you feel cold because heat is being transferred from your body to the surrounding air.
Created by: MrsHough
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