Climate Change

What is a greenhouse?

• A glass building which you grow plants.

• A glass building which protects plants inside from cold weather.

• A glass building with glass roof which traps sunlight, making the plants stay warm even at night and winter.

• A house that is green in colour.

Which gases in Earth's atmosphere trap heat during the day?

• Carbon dioxide and oxygen

• Carbon dioxide and methane

• Carbon monoxide and oxygen

• Methane and hydrogen

The gases that trap heat on earth surface are called greenhouse gases.

• True

• False

Greenhouse gases exist naturally in the atmosphere.

• True

• False

Without greenhouse gases to trap heat, the earth's average temperature will be close to ___________ Degrees Celsius.

• positive 80

• negative 80

• positive 18

• negative 18

Burning fossil fuels such as coal and oil produces ___________.

• carbon monoxide

• carbon dioxide

• carbon trioxide

• carbon quaoxide

Farming causes increase in greenhouse gases.

• True

• False

Cows and other farm animals release ________________, which is a greenhouse gas.

• carbon dioxide

• sulfur dioxide

• methane

Enhanced greenhouse effect means:

• more greenhouse gases in the atmosphere and less heat is trapped.

• more greenhouse gases in the atmosphere and more heat is trapped.

• less greenhouse gases in the atmosphere and less heat is trapped.

• less greenhouse gases in the atmosphere and more heat is trapped.

What will happen when global temperatures continue to increase? (you may select MORE THAN ONE)

• Glaciers will melt more quickly.

• Sea level will rise.

• Low-lying countries such as Singapore will be flooded.

• People will fall sick more easily.