PPT4 - Glaciers Characteristics, Process, Changes - A

Ice covered what percentage of land cover during the LGM?

• 10%

• 20%

• 30%

The transition of a substance directly from the solid to the gas state, without passing through the liquid state

• Evaporation

• Transpiration

• Sublimation

The ice sheet that covered North America during the LGM was called

• Scandinavian Ice Sheet

• Laurentide Ice Sheet

• Patagonian Ice Sheet

• Antarctica Ice Sheet

The area where the rate of melting in the ablation zone and the rate of accumulation in the accumulation zone is equal...

• Equilibrium line

• Glacial Budget

• Calving

The amount of radiation reflected by a surface is

• Anthropogenic

• Evapotranspiration

• Albedo

Which land cover has the highest albedo?

• A

• B

Positive feedback loops...

• brings a system closer to a target of stability

• enhance or amplify changes

• Are great with milk!

Since pre-industrial times, the earth’s average temperature has increased by

• 3°C

• 2.3°C

• 0.85°C

Check all the main greenhouse gases that have risen due to industrialisation

• CO²

• SO²

• CH³

• CFCs

Accelerated glacier flow happens because of...

• warmer ocean currents

• more surface melt lubricating the base

• cooler surface temperature