Climate change causes recap for Sec 3

Which of the following is the primary greenhouse gas responsible for climate change?*

• Nitrogen

• Carbon dioxide

• Oxygen

• Hydrogen

Which human activity is the largest contributor to increased carbon dioxide levels in the atmosphere?

• Industrial waste disposal
• Burning fossil fuels for energy production
• Increase in number of sunspots

• Increased volcanic activity

What is the enhanced greenhouse effect?

• The enhanced greenhouse effect leads to global cooling.
• The enhanced greenhouse effect is the additional warming effect caused by human activities.
• The enhanced greenhouse effect is caused by natural processes only.
• The enhanced greenhouse effect is a myth created by scientists.

Why do burning of fossil fuels lead to enhanced greenhouse effect?

• It release large amount of heat as it requires burning.

• It releases large amount of carbon dioxide that is a greenhouse gas that traps longwave radiation.

• It releases large amount of black smoke that can cause air pollution.

• It can release large amount of methane that is a greenhouse gas that traps heat.

Greenhouse gases in the atmosphere traps longwave radiation from the Earth's surface

• True

• False

Which of the following is NOT a natural cause of climate change?

• Volcanic eruptions
• Change in Earth's orbit

• Deforestation
• Sunspot occurences

Climate Change in the form of global cooling is the main occurrence for the last 100 years.

• True

• False

How do greenhouse gases contribute to climate change?

• They reflect sunlight away from Earth

• They trap heat in the atmosphere

• They cause volcanic eruptions

• They cool down the Earth's surface

What is the impact of melting ice caps on sea levels?

• Sea levels decrease

• Sea levels remain the same

• Sea levels rise

• Sea levels become unpredictable

Explain how deforestation can lead to more greenhouse gas in the atmosphere