8Th Grade Earth Science Atmospheric Structure And Measurement Packet

Front 1

Weather is the present condition of the atmosphere at any location. To understand weather, its causes, and how to predict it, we need to understand the atmosphere.

Back 1

Based on what we have already learned, we would expect the spheres with the greatest density to be closest to Earth's Center and the spheres that are less dense to be the farthest from Earth's center.

Front 2

Troposphere

Back 2

This layer is the thinnest layer, as it extends only about 12 km above Earth's surface. The troposphere represents only 2% of the height of the atmosphere but holds 85% of the its mass. The troposphere is the most important layer to life on Earth as it contains the gases necessary to support life.

Front 3

Stratosphere

Back 3

The layer above the troposphere, the stratosphere extends from about 12-50 km above Earth's surface. The stratosphereis less dense than the troposphere and where the ozone is found.

Front 4

Mesosphere

Back 4

Thes mesosphere is located 50-83km above Earths surface and is the where incoming meteorites burn up to form shooting stars.

Front 5

Thermosphere

Back 5

This layer is even less dense than the mesosphere and extends 80-300km above Earths surface. Scienctist know relatively little about the thermosphere because there is so little matter.

Front 6

Exosphere

Back 6

The outermost layer of Earths atmosphere is the largest, located 300-600km from Earths surface but it contains very little air. The exosphere is the transition zone between Earths atmoshpere and space.

Front 7

Tropopause, Stratopause, Mesopause

Back 7

-are boundaries that mark a sharp change in temperature behavior found between the atmospheric layers

Front 8

Ozone Layer Facts

Back 8

-absorbs ultraviolet light from the sun it convert the light energy to heat energy and warms up the atmosphere

Front 9

Earth's Atmosphere Consist of _____________?

a. mostly oxygen, argon, carbon dioxide, and water vapor
b. entirely of ozone, nitrogen, and water vapor
c. of gases that cannot be compressed
d. of a mixture of gases, liquid droplets, and minute solid particles

Back 9

d. of a mixture of gases, liquid droplets, and minute solid particles

Front 10

The atmosphere is bound to Earth by

Back 10

The force of gravity

Front 11

Nearly all water vapor in the atmosphere is found within the _________

Back 11

troposphere

Front 12

The greatest atmospheric pressure occurs in the ___________

Back 12

Troposphere

Front 13

The zone with the smallest vertical extent is the _______________

Back 13

Troposphere

Front 14

Temperature

Back 14

the measure of the kinetic or motion energy of the particles in the object being measured

Front 15

Thermometer

Back 15

insturment used to measure temperature

Front 16

Air pressure

Back 16

the weight of the atmosphere as Earths gravity pulls on air.

Front 17

barometer

Back 17

instrument used to measure air pressure

Front 18

humidity

Back 18

is the water vapor content of the air.

Front 19

Relative humidity

Back 19

expresses how full of moisiture the air is, because it is shown as a percent of the moisture that is in the air compared to how much the air could hold at that temperature

Front 20

dew point

Back 20

the temperature at some point will have dropped enough that the air is saturated

Front 21

dew

Back 21

condesation that occurs on the surfaces of grass, plants, etc.

Front 22

fog

Back 22

condensed small droplets of raim that remain suspended in the air as clouds

Front 23

psychrometer/hygrometer

Back 23

instrument used to measure helative humidity using a dry and wet bulb

Front 24

What is evaporation of water?

Back 24

the water is changing from a liquid to a gas

Front 25

Wind

Back 25

-wind direction is named for the direction toward which it blows
-wind blows from regions of higher pressure to lower pressure
-the steeper gradient the greater the wind speed