Greenhouse Effect

The majority of Earth's energy comes from...

• the Earth's core

• the Sun

• hydroelectric power

• burning fossil fuels

What is the greenhouse effect?

• The warming of a planet due to trapped radiation.
• The cooling of Earth due to air pollution.
• The heating of a solid, such as a rock.

Which of the following are greenhouse gases?

• Carbon dioxide
• Methane
• Water vapor
• All answers are correct

The Earth's atmosphere acts like a greenhouse that traps heat from the sun.

• true

• false

Without the Greenhouse Effect the Earth would be

• warm 
• cold
• dead

Which of the following natural events is NOT a source of carbon dioxide?

• Wildfire

• Decomposing plants and animals

• Volcanic eruption

• Earthquake

What happens to the temperature if more greenhouse gases are released into the atmosphere?

• Temperature goes up
• Temperature goes down

At what point in human history did global carbon dioxide levels start to rise?

• World War I

• World War II

• The Industrial Revolution

• The invention of the car

The greenhouse effect is a natural process

• true

• false

The greenhouse effect is caused by

• more heat arriving at the Earth from the sun

• the Earth releasing more heat at night

• gases in the air trapping heat released by the Earth