T2_Formative Assessment 2

What gas makes up the largest percentage of Earth's atmosphere?

• Oxygen

• Carbon dioxide

• Nitrogen

• Argon

Which human activity has contributed the most to increasing carbon dioxide levels?

• Planting trees

• Burning fossil fuels

• Using solar energy

• Recycling plastic

Which of the following gases is a greenhouse gas?

• Nitrogen

• Oxygen

• Methane

• Helium

How has the Earth's atmosphere changed over time?

• Oxygen levels have decreased

• Carbon dioxide levels have increased due to human activities

• The percentage of nitrogen has dropped

• Water vapor has disappeared

What is the main cause of global warming?

• The Earth's natural rotation

• The buildup of greenhouse gases in the atmosphere

• The Moon’s gravitational pull

• The movement of tectonic plates

Which of these is a consequence of global warming?

• Increased volcanic activity

• Rising sea levels

• More oxygen in the air

• Decreased solar energy

Which gas contributes most to the enhanced greenhouse effect?

• Argon

• Oxygen

• Carbon dioxide

• Helium

What happens when polar ice caps melt due to global warming?

• The oceans become less salty

• Sea levels rise

• More clouds form

• Rainfall decreases worldwide

Which of these is the best way to reduce carbon dioxide emissions?

• Using more fossil fuels

• Cutting down more trees

• Using renewable energy sources

• Burning waste materials

What is the benefit of using electric cars instead of petrol cars?

• They are cheaper to buy

• They do not produce greenhouse gases while driving

• They can drive faster

• They do not require charging