Unit 5 - Atmosphere and Biogeochemical Cycles Quiz

The nitrogen we breathe needs to be converted by ____________-fixing bacteria in the __________ before it can be used by our bodies.

• Carbon, atmosphere

• Oxygen, troposphere

• Nitrogen, soil

• Phosphorus, lithosphere

Tags

NGSS.MS-LS2-3

How do scientists think the composition of the atmosphere has changed?

• It has remained constant throughout history

• It has become more polluted over time

• It has become more oxygen-rich over time

• It has changed due to events on Earth

How does air pressure affect the atmosphere?

• Air pressure has no effect on the atmosphere

• Air pressure determines the temperature of the atmosphere

• Air pressure causes the atmosphere to expand

• Air pressure is a measure of force acting over an area

Tags

NGSS.MS-ESS2-5

_____________ causes air to be pulled down towards Earth’s surface.

• Gravity

• Wind

• Temperature

• Pressure

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

How is the atmosphere divided?

• Into layers based on temperature trends

• Into layers based on pressure trends

• Into layers based on composition

• Into layers based on altitude

What are the characteristics of the troposphere?

• It is the highest layer of the atmosphere and contains the ozone layer

• It is the layer closest to the Earth and contains most of the mass of the atmosphere

• It is the layer above the troposphere and protects Earth's surface from dangerous UV radiation

• It is the middle layer of the atmosphere where most meteors burn up

What are the characteristics of the stratosphere?

• It is the highest layer of the atmosphere and contains the ozone layer

• It is the layer closest to the Earth and contains most of the mass of the atmosphere

• It is the layer above the troposphere and protects Earth's surface from dangerous UV radiation

• It is the middle layer of the atmosphere where most meteors burn up

What are the characteristics of the mesosphere?

• It is the highest layer of the atmosphere and contains the ozone layer

• It is the layer closest to the Earth and contains most of the mass of the atmosphere

• It is the layer above the troposphere and protects Earth's surface from dangerous UV radiation

• It is the middle layer of the atmosphere where most meteors burn up

What is the role of the ozone layer in the atmosphere?

• It absorbs most of the Sun's harmful ultraviolet radiation

• It provides oxygen for humans and animals to breathe

• It is responsible for the greenhouse effect

• It causes acid rain

What is the primary gas found in the Earth's atmosphere?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Hydrogen