Yr8 CC: evidence of climate change

Which graph shows temperature change over a long time?

• Hockey stick curve

• Rugby ball curve

• Swimming goggle curve

• Golfing tee curve

Which graph shows atmospheric carbon dioxide levels over a long time?

• Keeling curve

• Hockey stick graph

• Golfing tee graph

• Reeling curve

Dendrochronology evidences climate change through the study of...

• ice cores

• tree ring growth

• ocean sediments

• ocean acidity

In years with higher carbon dioxide levels tree rings will be...

• wider

• narrower

• darker

• denser

The most recent tree ring will be...

• higher up

• near the roots

• on the outside

• on the inside

The name for the lake in Antarctica which is used to collect ice cores from is called...

• Vostok

• Vistik

• Vustuk

• Vastak

Ice cores tell us about atmospheric gas levels by:

• The air bubbles trapped in the firn (blue ice)

• The length of the ice core

• The width of the ice core

• The amount of bacteria trapped in the firn (blue ice)

Pollen analysis tells us about climate change because...

• We can work out how big plants grew

• We can work out what temperature it was at that location

• We can work out how the plant died

• We can find out if the plant caused hayfever

Ocean sediments tell us about climate change because (CHOOSE TWO)

• if the water used to be saltier then there used to be more ice

• if the water used to be saltier then there used to be less ice

• fossils trapped in the rock can tell us which creatures lived in the ocean

• fossils trapped in the rock can tell us the colour of the ocean

Since the industrialisation revolution the acidity of surface ocean waters has risen by approx...

• 15%

• 30%

• 45%

• 60%