Chapter 3

Question 1

Atmosphere

Answer 1

The mass of air surrounding a planet

Question 2

Atmospheric Pressure

Answer 2

the pressure exerted by the atmosphere on all objects within it

Question 3

Barometer

Answer 3

An instrument used to measure atmospheric pressure

Question 4

Homosphere

Answer 4

The lower layer of earth’s atmosphere, which exists from ground level roughly 80 kilometers (50 miles) able sea level

Question 5

Heterosphere

Answer 5

The upper layer of earth’s atmosphere, which exists higher than 80 kilometers (50 miles) above sea level

Question 6

Troposphere

Answer 6

The region of the atmosphere that extends from ground level to roughly 11 kilometers (7 miles) above sea level

Question 7

Stratosphere

Answer 7

The region of the atmosphere that spans altitudes of 11 kilometers to 48 kilometers (30 miles)

Question 8

Mesosphere

Answer 8

The region of the atmosphere that spans altitudes of 48 kilometers to 80 kilometers (50 miles)

Question 9

Jet Streams

Answer 9

narrow bands of high-speed winds that circle the earth, blowing from west to east

Question 10

Heat

Answer 10

Energy that is being transferred

Question 11

Temperature

Answer 11

A measure of the energy of motion in a substance’s molecules

Question 12

Thermosphere

Answer 12

The region of the atmosphere between altitudes of 80 kilometers and 460 kilometers

Question 13

Exosphere

Answer 13

The region of the atmosphere above an altitude of 460 kilometers

Question 14

Ionosphere

Answer 14

The region of the atmosphere between the altitudes of 65 kilometers and 330 kilometers where the gases are ionized