Finals Review Part II

What is the layer of air around the Earth called?

• hydrosphere

• atmosphere

• geosphere

The layers of Earth's atmosphere are determined by changes in _________.

• temperature
• density
• pressure
• color

In which two layers does temperature decrease with altitude?

• mesosphere and troposphere
• troposphere and stratosphere
• stratosphere and thermosphere
• thermosphere and exosphere

The most abundant gas in Earth's atmosphere is what?

• Oxygen

• Nitrogen

• Troposphere

• Helium

What gas makes up 21% of Earth's Atmosphere?

• Nitrogen

• Oxygen

• Ozone

• None of the Above

Which layer of the atmosphere has the highest density of gas molecules and highest atmospheric pressure?

• troposphere
• mesosphere
• stratosphere
• thermosphere

Which layer of the atmosphere contains the ozone?

• Troposphere

• Mesosphere

• Stratosphere

• Exosphere

The layer where most meteorites vaporize?

• Stratosphere

• Thermosphere

• Troposphere

• Mesosphere

Weather occurs in the thermosphere?

• True

• False

What is the hottest layer of the atmosphere?

• Troposphere

• Mesosphere

• Exosphere

• Thermosphere