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Chapter 3

True or False

True or False
Based on the information in the chapter, determine whether each of these statements is true or false.

This activity contains 13 questions.

	Air pressure decreases rapidly with increasing altitude.    True  False

	By chemical composition, the atmosphere is divided into the troposphere and the heterosphere.    True  False

	The thermosphere, mesosphere, stratosphere, and troposphere are layers of the atmosphere with distinctly different temperature characteristics.    True  False

	Gases in the heterosphere are evenly mixed and generally inert.    True  False

	The thermosphere comprises roughly the same layer as the homosphere.    True  False

	The ionosphere protects us from dangerous radiation by absorbing (or filtering) the shortest and most dangerous wavelengths coming from the Sun.    True  False

	For practical purposes the atmosphere is considered to extend to 480 kilometers from the Earth's surface. Beyond this is the exosphere.    True  False

	The tropopause is located at the top of the troposphere.    True  False

	A temperature inversion occurs when temperature decreases with altitude, effectively creating a layer of cold air between two layers of warm air.    True  False

	Transportation is the major anthropogenic (human-caused) source for carbon monoxide in the atmosphere.    True  False

	Animal waste is the single largest source of ozone in the lower atmosphere.    True  False

	Volcanoes, forest fires, and dust storms are all natural sources of air pollution.    True  False

	Surface ozone is even more beneficial to humans than the ozone found higher up in the atmosphere.    True  False

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