CLIMATE AND WEATHER QUESTIONS AND ANSWERS GRADE 12

1. Multiple-choice questions
Example:
Another name for a mid-latitude cyclone is:

2. Short answer questions
Example:
List two characteristics of a tropical cyclone.
Answer:

For example, see Figures 1.2.2A and 1.2.3B.

Activity 1
Study the synoptic weather chart in Figure 1.3.3B below and answer the questions that follow.

Name the high pressure cells labelled A and B. (2 × 2 = 4)
Give TWO pieces of evidence from the map that this is a summer map. (2 × 2 = 4)
Identify the low pressure cell labelled E. (1 × 2 = 2)
The letter G indicates a mid-latitude cyclone.
1. Name the fronts labelled F and H. (2 × 2 = 4)
2. In which direction does this cyclone generally move? (1 × 2 = 2)
3. Describe how front F will affect the weather of Cape Town. (3 × 2 = 6)
Refer to the cyclone named Cathy.
1. What type of cyclone is Cathy? (1 × 2 = 2)
2. State how many cyclones have occurred for this season, including Cathy. (1 × 2 = 2)
3. In which direction does this cyclone move? (1 × 2 = 2)
4. List TWO conditions necessary for this cyclone to form. (2 × 2 = 4)
Refer to the weather station labelled D and describe the weather in terms of: cloud cover, wind speed, wind direction, air temperature, dewpoint temperature. (4 × 2 = 8)
[40]

Answers to activity 1

1. South Atlantic high pressure
2. South Indian high pressure (4)
A tropical cyclone can be seen on the map.
Mid-latitude cyclones are seen south of South Africa.
The South Indian and South Atlantic high pressures are south of South Africa.
A low pressure cell can be seen over the centre of South Africa.
The date: 30/01/201033 (any 2) (4)
Coastal low pressure (2)
1. F – Cold front; H – Warm front (4)
2. In an easterly direction/from west to east (2)
3. Temperatures will decrease; pressure will increase;
  Cumulonimbus clouds and thunderstorms will occur (6)
1. Tropical cyclone (2)
2. Three (2)
3. Westerly/from east to west (2)
4. Temperature must be above 27°C; Humidity must be high; There must only be light and variable wind;
  The atmosphere must be unstable; There must be a wide area of low pressure with closed isobars; It must be between 5°S and 25°S (needs Coriolis force);
  Little surface friction (any 2) (4)
Cloud cover: Clear skies; Wind speed: 10 knots;
Wind direction: SSE; Air temperature: 22°C;
Dewpoint temperature: 15 °C (8)
[40]

Activity 2
Figure 1.4.2B (left) illustrates valley climates. Study the diagram and answer the questions that follow.

Name the valley winds depicted in A and B. (2 × 2 = 4)
State ONE advantage of the wind labelled A. (1 × 2 = 2)
Name the layer labelled C. (1 × 2 = 2)
Explain how the wind labelled B influences:
1. Farming in the valley (2 × 2 = 4)
2. Industry in the valley (2 × 2 = 4)
  [16]

Answers to activity 2

Last modified on Friday, 03 September 2021 07:30