Geography Unit 3 MGIS + Land Cover Change revision

What is this land cover?

• Cultivated and managed

• natural and semi natural vegetation

• Bare areas

• Artificial surfaces

Answer explanation

The correct choice, 'Cultivated and managed', refers to land that is actively farmed or maintained for agricultural purposes, distinguishing it from natural vegetation, bare areas, or artificial surfaces.

What is this land cover?

• Cultivated and managed

• natural and semi natural vegetation

• Bare areas

• Artificial surfaces

Answer explanation

The correct answer is 'Artificial surfaces' as it refers to areas modified by human activity, such as buildings and roads, distinguishing them from natural vegetation or cultivated land.

What is this land cover?

• Cultivated and managed

• natural and semi natural vegetation

• Bare areas

• Artificial surfaces

Answer explanation

The correct answer is 'natural and semi natural vegetation' as it refers to areas covered by native plants and ecosystems, distinguishing it from cultivated land, bare areas, or artificial surfaces.

What is this land cover?

• Cultivated and managed

• natural and semi natural vegetation

• Bare areas

• Cultivated aquatic or regularly flooded areas

Answer explanation

The correct answer is 'Cultivated aquatic or regularly flooded areas' because it specifically describes land that is managed for agriculture in wet conditions, distinguishing it from other land cover types.

What is the end point of a glacier called?

• Moraine

• Terminus

• Meltwater

• Till

Answer explanation

The end point of a glacier is called the terminus. This is where the glacier melts or calves, marking its furthest advance. Other options like moraine and till refer to materials associated with glaciers, not the endpoint itself.

What is the material transported by a glacier called?

• Terminus

• Floodplain

• Moraine

• Crevasse

Answer explanation

The material transported by a glacier is called a moraine. Moraines are accumulations of debris that glaciers push along as they move, distinguishing them from other terms like terminus or crevasse.

Where does the glacier melt?

• Accumulation zone

• Ablation zone

• Melting zone

Answer explanation

The glacier melts primarily in the ablation zone, where the rate of melting and sublimation exceeds the accumulation of snow and ice. This zone is crucial for understanding glacier dynamics.

Approximately how much of the earth’s land surface was covered in ice during the Last Glacial Maximum?

• 10%

• 20%

• 30%

• 40%

Answer explanation

During the Last Glacial Maximum, approximately 30% of the Earth's land surface was covered in ice. This significant ice coverage is a key characteristic of this glacial period.

Approximately how much of the earth’s land surface is covered in ice today?

• 10%

• 20%

• 30%

• 40%

Answer explanation

About 10% of the Earth's land surface is currently covered in ice, primarily in polar regions and glaciers. This makes 10% the correct choice among the options provided.

What is the term for ice ‘reflectivity’ (the white colour of ice reflecting light instead of absorbing it)?

• Moulin

• Albedo

• Ablation

• Abalone

Answer explanation

The term 'albedo' refers to the reflectivity of a surface, specifically how much light is reflected rather than absorbed. Ice has a high albedo, which is why it appears white and reflects light effectively.