Stogs KS3 Earth's Atmosphere and Climate Change

Select the greenhouse gases from the list below.

• Carbon dioxide

• Nitrogen

• Water vapour

• Methane

The greenhouse effect is:

• When the Earth gets very hot.

• The gradual increase in surface temperature of the Earth.

• When energy from the Sun is transferred into the thermal energy store of gases in the atmosphere.

• A very concerning phenomenon.

Global warming is:

• When the Earth gets very hot.

• The gradual increase in the surface temperature of the Earth.

• When energy from the Sun is transferred into the thermal energy store of gases in the atmosphere.

• What happens in countries which have hot summers.

What do scientists think will happen due to global warming?

• Unpredictable weather will be more frequent.

• Ice caps in the Arctic and Antarctic will melt.

• Sea levels will rise.

• Droughts will affect farming and may cause famine. .

Which of these statements is incorrect?

• Methane is a greenhouse gas.

• 21% of the Earth's atmosphere is oxygen.

• The soil is a carbon sink; it absorbs and stores carbon.

• An ore is a rock that contains minerals.

What caused the amount of oxygen in the Earth's early atmosphere to increase?

• Respiration

• Volcanic activity

• Photosynthesis

• Earthquakes and uplift

What was the major cause of the decrease in carbon dioxide levels in the Earth's early atmosphere?

• It was locked up in fossil fuels and sedimentary rocks

• Volcanic activity

• It formed the oceans with condensed water vapour

• Photosynthesis

The percentage of nitrogen in the atmosphere is roughly:

• 20%

• 0.04%

• 80%

• 2%

The percentage of oxygen in the atmosphere is roughly:

• 20%

• 0.04%

• 80%

• 2%

The percentage of carbon dioxide in the atmosphere is:

• 20%

• 0.04%

• 80%

• 2%