Unit 3 Earth's Atmosphere

Envelope of gases that surround Earth

• Air Pressure

• Atmosphere

• Greenhouse Gases

Tags

NGSS.MS-ESS2-6

What gas makes up 78% of Earth's atmosphere?

• oxygen

• nitrogen

• carbon dioxide

When climbing to the top of a mountain, it is more difficult to breathe. It is more difficult to breathe because the air pressure _______________ as altitude increases.

• increases

• decreases

The __________________ is the lowest layer of Earth's atmosphere where weather occurs.

• mesosphere

• thermosphere

• troposphere

• stratosphere

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

The __________________ is the outermost layer of Earth's atmosphere and contains the exosphere.

• mesosphere

• thermosphere

• troposphere

• stratosphere

The __________________ is the middle layer of the atmosphere that protects Earth's surface from being hit by most meteors.

• mesosphere

• thermosphere

• troposphere

• stratosphere

The __________________ is the second layer of Earth's atmosphere that contains few clouds and is where some planes fly.

• mesosphere

• thermosphere

• troposphere

• stratosphere

The __________________ is the outer layer of the thermosphere.

• mesosphere

• outersphere

• troposphere

• exosphere

Which of the following is the correct order of the atmosphere layers from Earth to space?

• troposphere, stratosphere, mesosphere, thermosphere, exosphere
• troposphere, mesosphere, thermosphere, exosphere, stratosphere
• thermosphere, stratosphere, mesosphere, troposphere, exosphere
• troposphere, stratosphere, mesosphere, exosphere, thermosphere

What absorbs harmful UV radiation from the Sun to protect Earth?

• greenhouse effect

• ozone layer

• sun layer