Atmosphere Learning Quiz

What is the primary function of Earth's atmosphere?

• To protect Earth from meteors

• To generate electricity

• To provide a habitat for marine life

• To maintain Earth's temperature and climate

Which two gases make up the majority of Earth's atmosphere?

• Helium and Hydrogen

• Argon and Neon

• Nitrogen and Oxygen

• Oxygen and Carbon Dioxide

What is the outermost layer of Earth's atmosphere called?

• Exosphere

• Mesosphere

• Stratosphere

• Troposphere

In which layer do most meteors burn up upon entry?

• Mesosphere

• Thermosphere

• Exosphere

• Stratosphere

Which layer of the atmosphere contains the ozone layer?

• Mesosphere

• Stratosphere

• Troposphere

• Thermosphere

What percentage of the atmosphere's mass is found in the troposphere?

• 50%

• 60%

• 80%

• 70%

How long has Earth's atmosphere been around?

• 6 billion years

• 4.5 billion years

• 2.5 billion years

• 1 billion years

What is the estimated weight of Earth's atmosphere?

• 6.5 quadrillion tons

• 5.5 quadrillion tons

• 4.5 quadrillion tons

• 3.5 quadrillion tons

What does the Greek word 'atmos' mean?

• Air

• Wind

• Cloud

• Vapour

What major event occurred 420 million years ago due to a change in the atmosphere?

• The creation of the exosphere

• The formation of the ozone layer

• The first major extinction

• The beginning of the ice age