Exploring Earth and Its Atmosphere

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

• Stratosphere

• Troposphere

• Mesosphere

• Thermosphere

Which gas is the most abundant greenhouse gas in the Earth's atmosphere?

• Carbon dioxide

• Methane

• Water vapour

• Nitrous oxide

What is one major effect of air pollution on human health?

• Improved lung function

• Increased risk of respiratory diseases

• Enhanced immune system

• Better sleep quality

Which process in the water cycle involves water vapour cooling and changing into liquid water?

• Evaporation

• Condensation

• Precipitation

• Transpiration

What is the main component of natural gas?

• Ethane

• Propane

• Methane

• Butane

Which layer of the atmosphere contains the ozone layer?

• Troposphere

• Stratosphere

• Mesosphere

• Exosphere

Which of the following is a renewable natural resource?

• Coal

• Oil

• Wind

• Natural gas

What is the process called when plants release water vapour into the air?

• Evaporation

• Condensation

• Transpiration

• Precipitation

Which of the following is a consequence of increased greenhouse gases in the atmosphere?

• Global cooling

• Global warming

• Decreased sea levels

• Increased biodiversity

What is the primary cause of acid rain?

• Carbon dioxide

• Sulphur dioxide

• Methane

• Nitrogen