Which is the most abundant gas in the atmosphere?

• oxgyen

• nitrogen

• trace gases

• carbon dioxide

What % of the atmosphere is oxgyen?

• 15

• 78

• 21

• 24

What are trace gases?

• several gases in the atmosphere that only account for a small portion

• several gases in the atmosphere that only account for a large portion

• several gases in the atmosphere that are missing

• several gases in the atmosphere that are harmful

What is the atmosphere?

• envelope of gases that protect the Sun

• envelope of particles that protect the Earth

• envelope of gases that protect the Earth

• envelope of gases that protect the Sun

Which is the coldest layer of the atmosphere?

• mesosphere

• troposphere

• thermosphere

• exosphere

Why does weather occur in the troposphere?

• because of the temperature

• because of the water vapor and gases it contains

• because of the altitude

• because its closest to Earth

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Air planes fly in which layer of the atmosphere?

• Mesosphere

• Stratosphere

• Exosphere

• Troposphere

Air pressure _____ as you increase in altitude.

What is the importance of the ozone layer?

• It is a cold section of the mesosphere

• It traps in gases

• It protects the planet from UV radiation from the Sun

• it is a layer that traps airplanes from flying above it

Which layer has NO air pressure?

• Mesosphere

• Exosphere

• Stratosphere

• Thermosphere