Take this Quiz: A-Level Geography: Physical | Zestly

Question 1

In the fictional catchment of River A, deforestation has removed 40 percent of the forest canopy. Which of the following best describes the immediate downstream impact on the water cycle within this catchment?

Accepted Answer

Increased peak discharge as water reaches the channel more rapidly

Answer

Increased interception leading to higher evapotranspiration rates

Answer

Reduced surface runoff due to increased soil infiltration capacity

Answer

Decreased sediment load because of reduced soil erosion

Question 2

In the carbon cycle, which of the following is correctly classified as a carbon store rather than a carbon flow?

Accepted Answer

Calcium carbonate sediments on the deep ocean floor

Answer

Photosynthesis by phytoplankton in the surface ocean

Answer

Diffusion of carbon dioxide between the atmosphere and ocean

Answer

Respiration by terrestrial organisms

Question 3

Consider a feedback mechanism where rising global temperatures cause permafrost to melt, releasing methane into the atmosphere, which further increases temperatures. How should this be classified?

Accepted Answer

Positive feedback, as the system amplifies the initial change

Answer

Negative feedback, as the system counteracts the initial change

Answer

Positive feedback, as the system restores the original equilibrium

Answer

Negative feedback, as the system reduces the rate of warming

Question 4

On the fictional coastline of Bay X, a groyne has been constructed to trap sediment. Which of the following describes the most likely consequence of this management scheme?

Answer

The groyne increases the total volume of sediment within the entire sediment cell

Answer

Erosion is permanently halted along the entire length of the coastline

Answer

Longshore drift is increased on the downdrift side of the groyne

Answer

Sediment starvation occurs downdrift, leading to increased erosion in that area

Question 5

Which of the following processes is primarily responsible for the formation of a corrie in a glaciated landscape?

Answer

Deposition of unsorted till at the glacier snout

Answer

Abrasion of the valley floor by lateral moraine

Answer

Nivation and rotational glacial erosion

Answer

Plucking of the valley sides by meltwater streams