Global Climate Change

Front

The average temperature of the surface of Earth has increased approximately 1°C in the past century. Which reason best explains this increase in temperature? Options: lower levels of ozone in the atmosphere, lower levels of nitrogen in the atmosphere, higher levels of carbon dioxide in the atmosphere, higher levels of oxygen in the atmosphere

Back

higher levels of carbon dioxide in the atmosphere

Front

What is the best conclusion from the graph regarding atmospheric carbon dioxide levels?

Back

Atmospheric carbon dioxide levels have increased steadily since 1960.

Front

Which of the following gases IS NOT considered a greenhouse gas?

• carbon dioxide
• nitrogen
• water vapor
• methane

Back

nitrogen

Front

Compared to other greenhouse gases, carbon dioxide is very effective in trapping heat near the surface of the Earth.

Back

true

Front

Which of the following have been linked to climate change? Options: droughts, flooding, melting of polar ice caps, ocean acidification, all of the above.

Back

all of the above

Front

Which is a primary energy source used by power plants to generate electricity? Options: coal, wood, petroleum/gasoline, batteries, natural gas

Back

coal

Front

Where are changes in temperature expected to be greatest? Options: near the equator, near the poles, between the equator and the North Pole, between the equator and the South Pole

Back

near the poles

Front

The main human activity that releases greenhouse gases is

• buying bottled water
• burning fossil fuels
• current agricultural practices
• eating red meat

Back

burning fossil fuels

Front

Some greenhouse gases are naturally present in the Earth's atmosphere.

Back

True

Front

Which of the following is contributing to an increase in carbon dioxide in the atmosphere?

• deforestation
• photosynthesis and respiration
• oceans acidification
• all of the above

Back

deforestation