The air in the troposphere has a greater density than the air in any other layer of the atmosphere,

• True
• False

Which gas in our atmosphere is most abundant?

• Argon
• Oxygen
• Nitrogen
• Carbon Dioxide

Temperature in the stratosphere warms as altitude increases.

• True
• False

What is the percentage of oxygen in Earth's atmosphere?

• 1%
• 21%
• 78%
• 90%

What is the percentage of nitrogen in Earth's atmosphere?

• 1%
• 21%
• 78%
• 90%

In which layer of the atmosphere does weather occur?

• Mesosphere
• Thermosphere
• Stratosphere
• Troposphere

What decreases as you go up in the atmosphere?

• Altitude
• Atmosphere
• Meteors
• Air Pressure

What is the lowest main layer of Earth's atmosphere?

• Thermosphere
• Troposphere
• Stratosphere
• Mesosphere

Where is the temperature the highest?

• 1
• 2
• 3
• 4

Where is the air pressure the greatest?

• 1
• 2
• 3
• 4