Pan's Topic 6 lessons 1-2

What percentage of air is made up of nitrogen?

• 78%

• 21%

• 50%

• 10%

What percentage of air is made up of oxygen?

• 78%

• 21%

• 50%

• 10%

Which gas makes up the largest percentage of air?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Helium

What is the main component of air?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Argon

What is the altitude range of the Mesosphere?

• 0-12 km

• 12-50 km

• 50-80 km

• 80-700 km

Which layer of the atmosphere is known for having the coldest temperatures?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

What percentage of air is made up of oxygen?

• 78%

• 21%

• 50%

• 10%

Which gas is present in the largest amount in the Earth's atmosphere?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Water vapor

Which layer of the atmosphere is closest to space?

• Exosphere

• Thermosphere

• Mesosphere

• Stratosphere

Which layer of the atmosphere is known for weather phenomena?

• Exosphere

• Thermosphere

• Mesosphere

• Troposphere