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play with air and water

Total questions: 10

Worksheet time: 4mins

Name
Class
Date
1.

Which layer of the atmosphere has the highest density of gas molecules?

a)

mesosphere

b)

Troposphere

c)

Exosphere

d)

thermosphere

e)

stratosphere

2.

How much of the earth's water is freshwater?

a)

50 %

b)

93%

c)

97 %

d)

3 %

e)

0.93%

3.

Which is a measure of the dissolved salt in saltwater?

(a)  

4.

After precipitation occurs, water that does not run off into surface water can seep into soil be stored as _______?

a)

Snow

b)

Evaporation

c)

Condensation

d)

Ground Water

5.

Look at the picture. What is a?

(a)  

6.

Currents help moderate the temperature of the ocean by

a)

moving warm water toward cold water

b)

melting iceburges

c)

absorbing sunlight

7.

Which direction do ocean currents travel in the Northern Hemisphere?

a)

clockwise

b)

counter clockwise

c)

anticlockwise

d)

counter anticlockwise

8.

The hottest layer.

a)

exosphere

b)

troposphere

c)

thermosphere

d)

stratosphere

9.

What happens to the density (thickness)/air pressure of the air as you increase in altitude?

a)

density decreases

b)

density remains same

c)

density increases

d)

density disappears

10.

The Earth's atmosphere is up to 10,000 km high.

The troposphere extends from...

a)

the Earth's surface to up to 6-20 km high

b)

the Earth's surface to up to 690 km high

c)

the Earth's surface to up to 85 km high

d)

the Earth's surface to 10,000 km high