8.3.6 Evidence for climate change

Photographic evidence shows glaciers have become smaller over the last 100 years.

• True

• False

Scientists can use ice cores taken from Antarctica to study the past climate. What do they look for in the ice cores?

• Animal remains

• The concentration of different gases trapped in the ice.

Scientists study tree rings to find evidence of climate change. Select the true statements about tree rings.

• In warm, wet years trees grow very little and make narrow tree rings.

• In warm, wet years trees grow a lot and make thick tree rings.

• Trees grow less in cold, dry times

Over the last 100 years sea levels have risen by about 20cm

• True

• False

Energy resources that can be re-placed , and will not run out e.g. wind, solar are known as…

• Renewable energy
• Fossil Fuels
• Food security
• Food Miles
• Irrigation

Energy resources cannot be replaced once they are all used up e.g. coal, oil are known as…

• Non - renewable energy
• Renewable energy
• Water security
• Irrigation
• Food Miles

What type of gas does fracking aim to release?

• Oxygen

• Nitrous oxide

• Methane (natural gas)

• Carbon dioxide

What type of rock gets shattered to release the gas in fracking?

• Granite

• Limestone

• Shale

• Sandstone

Where did the Exxon Valdez disaster happen?

• English Channel

• Prince William Sound, Alaska

• Straight of Hormuz

• Cape of Good Hope

The amount of carbon dioxide released into the atmosphere as a result of a person’s activities is known as…

• Carbon footprint
• Climate
• Greenhouse gasses
• Ice Age