Understand Weather Ch 8.1 - 8.2 Quiz

Match the terms to their definitions.

• Air

• A mixture of colorless, odorless, and tasteless gases

• Atmosphere

• The weather conditions an area receives over time

• Climate

• The air surrounding the earth

• Weather

• The condition of the air

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Name two gases in our air.

• Oxygen

• Carbon monoxide

• Hydrogen

• Nitrogen

Answer explanation

About 21% of air is oxygen, and 78% of the air is nitrogen. Very small amounts of other gases make up the remaining 1% of the air.

Which level of the atmosphere has the highest density of gases?

• Upper Atmosphere

• Middle Atmosphere

• Lower Atmosphere

Answer explanation

The lower atmosphere's conditions are always changing.

In which level of the atmosphere does weather happen?

• Upper Atmosphere

• Middle Atmosphere

• Lower Atmosphere

Tags

NGSS.MS-ESS2-6

Which level of the atmosphere has the lowest density of gases?

• Upper Atmosphere

• Middle Atmosphere

• Lower Atmosphere

Answer explanation

The air gets thinner the higher up in the atmosphere, and the air molecules are less dense. This part of the atmosphere has high temperatures because it receives the most energy from the sun.

Which level of the atmosphere stays the same and contains the ozone layer which protects us from the harmful rays of the sun?

• Upper Atmosphere

• Middle Atmosphere

• Lower Atmosphere

Label the levels of the atmosphere.

a

b

c

Middle

Lower

Upper

Air has weight and takes up space because it is made of (a)   .

• pressure

• matter

• force

Gases (a)   exert pressure.

• cannot

• can

Answer explanation

Because gases have weight, they can exert pressure.

Which air is heavier?

• Cold air

• Warm air

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6