Quiz on Anticyclones and Weather Patterns in South Africa

What causes the dry conditions on the west coast of South Africa?

• Onshore winds from the Indian Ocean

• Descending air of the South Atlantic High pressure cell

• High humidity levels

• Frequent rainfall from cyclones

What type of winds does the South Indian High Pressure cause on the east coast?

• Northerly winds

• Southwesterly winds

• Westerly winds

• Northeasterly or southeasterly winds

What phenomenon occurs often on the West Coast due to cooling air?

• Rainfall

• Fog

• Thunderstorms

• Hurricanes

What is the effect of the Kalahari Anticyclone during winter?

• Increased rainfall

• Cloudy and humid conditions

• Cloudless, cool, and dry conditions

• Warm and moist air

What is a common weather condition in the highveld region during winter?

• Tropical storms

• High humidity

• Frost

• Heavy rainfall

What happens to the moisture in the air descending from the Kalahari Anticyclone?

• It increases humidity

• It forms clouds

• It condenses and causes rain

• It evaporates

What type of thunderstorms can develop due to warm, moist air moving over the escarpment?

• Line thunderstorms

• Cyclonic thunderstorms

• Frontal thunderstorms

• Tropical thunderstorms

What is the primary reason for the stable air and temperature inversion on the west coast?

• Warm ocean currents

• Low humidity

• Frequent cyclones

• High pressure systems

What is the role of the inversion layer in summer regarding moisture?

• It allows for rising convection currents

• It prevents moisture from reaching the plateau

• It causes heavy rainfall

• It increases evaporation rates

What is the effect of the anticyclonic influence during summer?

• Cold fronts affect the country

• Warm air rises and causes convectional thunderstorms

• Increased cloud cover

• Dry conditions prevail