Module 4: Introduction to South Africa Weather and Climate
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Questions and Answers

What are the key characteristics that define a climate region in Africa?

  • Temperature and rainfall averages (correct)
  • Population density and vegetation cover
  • Altitude and longitude
  • Economic activities and natural resources

Where are Equatorial regions in Africa primarily located?

  • Near the equator, in central Africa, and the southern coast of West Africa (correct)
  • On the border with Europe
  • In Southern Africa only
  • Close to the North Pole

What is a key characteristic of Equatorial regions in Africa regarding temperatures?

  • Extreme temperature fluctuations daily
  • Temperate climate similar to Europe
  • Cold temperatures with snow all year round
  • Hot temperatures throughout the year (correct)

How much rainfall do Equatorial areas in Africa typically experience annually?

<p>Over 1,500 millimeters (D)</p> Signup and view all the answers

What is the most common form of precipitation in Equatorial regions in Africa?

<p>Afternoon convection storms (D)</p> Signup and view all the answers

Which region encircles the equator in Africa, including locations like East Africa and the Congo?

<p>Tropical regions (D)</p> Signup and view all the answers

How do wind-driven ocean currents affect temperatures?

<p>Cause warm air above warm ocean currents and cold air above cold ocean currents (B)</p> Signup and view all the answers

How do onshore winds affect rainfall?

<p>Bring moisture to coastal areas, making inland places drier (A)</p> Signup and view all the answers

What is the influence of the Benguela Current on desert formation in South Africa?

<p>Causes fog formation in the Namib Desert (C)</p> Signup and view all the answers

Which ocean current leads to more rain on the east coast of South Africa and Mozambique?

<p>Agulhas Current (B)</p> Signup and view all the answers

What role does evaporation from the ocean play in precipitation over landmasses?

<p>Is the primary source of precipitation over Earth's landmasses (A)</p> Signup and view all the answers

How do warm ocean currents affect precipitation in maritime climates?

<p>Result in warmer air capable of holding more water vapor, leading to increased rain (C)</p> Signup and view all the answers

What type of precipitation occurs when air rises up a mountain and cools down?

<p>Orographic rain (A)</p> Signup and view all the answers

Why do coastal areas tend to receive more rain compared to inland cities?

<p>As a result of warm ocean currents (A)</p> Signup and view all the answers

What causes noticeable differences between summer and winter seasons in Africa?

<p>Tropic line shifts (C)</p> Signup and view all the answers

What type of wind blows down mountain slopes at night in mountainous regions?

<p>Cold mountain wind (C)</p> Signup and view all the answers

What happens to air as it subsides towards the Earth's surface?

<p>It warms up (C)</p> Signup and view all the answers

Why does condensation and rainfall occur during subsidence?

<p>Because the subsiding air can hold more water (A)</p> Signup and view all the answers

What causes air to move from a high-pressure area to a low-pressure area?

<p>Convergence (D)</p> Signup and view all the answers

What is the type of rainfall received by areas that lie in the path of mid-latitude cyclones?

<p>Frontal rain (C)</p> Signup and view all the answers

Why do mid-latitude cyclones carry frontal rain?

<p>Due to westerly winds blowing from high-pressure areas (C)</p> Signup and view all the answers

What is the rate at which rising air cools known as?

<p>Dry Adiabatic Lapse Rate (B)</p> Signup and view all the answers

What happens when cooling air holds less water vapor?

<p>Condensation occurs (D)</p> Signup and view all the answers

What contributes to the creation and persistence of the Sahara Desert in North Africa?

<p>Subsiding air and high-pressure belts (A)</p> Signup and view all the answers

Where does condensation not occur according to the text?

<p>In the descending, warming air (B)</p> Signup and view all the answers

What causes the formation of cold fronts according to the text?

<p>Mid-latitude cyclones (D)</p> Signup and view all the answers

What is the zone formed by converging tropical easterlies called?

<p>Intertropical Convergence Zone (C)</p> Signup and view all the answers

What leads to rainfall in equatorial regions according to the text?

<p>Convergence of tropical easterlies at the ITCZ (D)</p> Signup and view all the answers

Which process leads to Cyclonic (or frontal) rain in Western Cape and North Africa?

<p>Mid-latitude cyclones leading to westerly winds convergence (B)</p> Signup and view all the answers

What causes the rising of air at the polar front according to the text?

<p>Mid-latitude cyclones formation (D)</p> Signup and view all the answers

Which African climate region experiences very high daytime temperatures and nighttime temperatures around 5°C?

<p>Desert region (D)</p> Signup and view all the answers

What is the annual temperature range in the Highveld region of Africa?

<p>9°C (A)</p> Signup and view all the answers

Which African climate region receives the least amount of rainfall annually?

<p>Desert region (D)</p> Signup and view all the answers

In which climate region of Africa do winters experience cooler temperatures averaging around 21°C?

<p>Tropical region (D)</p> Signup and view all the answers

What is the primary form of precipitation in the Humid subtropical region of Africa?

<p>Convection rain (A)</p> Signup and view all the answers

Which climate region in Africa has cold, wet winters with temperatures around 12°C?

<p>Mediterranean region (D)</p> Signup and view all the answers

What distinguishes the Semi-arid regions from desert regions in Africa with regard to rainfall?

<p>Desert regions receive less than 250 millimeters annually. (C)</p> Signup and view all the answers

Which African climate region is situated mainly on the South African eastern coast and has an annual temperature range of 11°C?

<p>Tropical region (A)</p> Signup and view all the answers

What is the average summer temperature in the Humid subtropical region of Africa?

<p>26°C (A)</p> Signup and view all the answers

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