KS3 Recap: Atmospheric pollution

What percentage of the Earth's atmosphere is made up of nitrogen?

• 60%

• 80%

• 90%

• 70%

Which gas is primarily responsible for trapping heat in the Earth's atmosphere?

• Argon

• Carbon Dioxide

• Oxygen

• Nitrogen

What is the main source of methane emissions in agriculture?

• Burning fossil fuels

• Deforestation

• Volcanic eruptions

• Livestock digestion

What is the primary effect of deforestation on atmospheric carbon dioxide levels?

• Increases carbon dioxide levels

• Decreases carbon dioxide levels

• Decreases methane levels

• Increases oxygen levels

Which of the following is NOT a greenhouse gas?

• Oxygen

• Methane

• Water vapour

• Carbon Dioxide

What is the main consequence of increased greenhouse gases in the atmosphere?

• Decreased global temperatures

• Increased global temperatures

• Stable global temperatures

• Decreased sea levels

Which human activity is a major contributor to carbon dioxide emissions?

• Farming

• Burning fossil fuels

• Mining

• Fishing

What is the greenhouse effect?

• The absorption of sunlight by greenhouse gases

• The reflection of sunlight by greenhouse gases

• The cooling of the Earth by greenhouse gases

• The trapping of heat by greenhouse gases

What happens if there aren't enough greenhouse gases in the atmosphere?

• The Earth becomes too hot

• The Earth becomes too cold

• The Earth becomes more humid

• The Earth remains the same temperature

Which of the following is a natural source of carbon dioxide?

• Deforestation

• Rice farming

• Volcanoes

• Livestock