1.4.1 What is a synoptic weather map? (1x1) (1)
- **Answer:** A synoptic weather map is a graphical representation showing the current atmospheric conditions over a large area, typically illustrating parameters like pressure systems, fronts, temperature, wind speeds, and directions.
1.4.2 Locate the area represented by the line running from A to B. Is this an example of a steep or gentle pressure gradient? Provide a reason for your answer. (1+2) (3)
- **Answer:** The area represented by the line running from A to B has closely spaced isobars. This indicates a steep pressure gradient.
- **Reason:** A steep pressure gradient is characterized by isobars that are closely spaced, indicating a rapid change in pressure over a short distance, which typically results in stronger winds.
1.4.3 What type of pressure cells are shown by letter P and letter V? (2x2) (4)
- **Answer:**
- **Letter P:** This is typically a low-pressure cell (cyclone) as indicated by the closed isobar loop with lower pressure in the center.
- **Letter V:** This is typically a high-pressure cell (anticyclone) as indicated by the closed isobar loop with higher pressure in the center.
1.4.4 Identify the type of front shown by the letter C (1x2) (2)
- **Answer:** The type of front shown by the letter C is likely a cold front.
- **Reason:** Usually, this is identified if the front is moving towards warmer air, as indicated by triangles pointing in the direction of movement on the synoptic map.
1.4.5 Determine the following weather conditions for the station model X:
1.4.5.1 Air temperature (1x1) (1)
- **Answer:** The temperature is shown as a numerical value, typically in the upper left of the station model. For example, if it reads 25, the air temperature is 25°C.
1.4.5.2 Dew point temperature (1x1) (1)
- **Answer:** The dew point temperature is shown below the air temperature in the station model. For example, if it reads 18, the dew point temperature is 18°C.
1.4.5.3 Cloud cover (1x1) (1)
- **Answer:** Cloud cover is indicated by the amount of shading in the circle at the center of the station model. For example, if the circle is completely shaded, it indicates 100% cloud cover; if three-fourths shaded, 75% cloud cover.
1.4.5.4 Wind direction (1x1) (1)
- **Answer:** Wind direction is shown by the arrow extending from the station circle. For example, if it points from the southwest, the wind is coming from the southwest.
1.4.5.5 Wind speed (1x1) (1)
- **Answer:** Wind speed is indicated by the barbs on the wind arrow. Each full barb represents 10 knots, and each half barb represents 5 knots. For example, if there are two full barbs, the wind speed is 20 knots.
#### Note:
- These answers are based on general symbol interpretations used in synoptic weather maps. The exact figures and directions might need to be specified based on the actual map provided, which is not included in this content.
GEOGRAPHY
Question 1.4 (15 marks]
Use the synoptic weather map given below to answer the questions that follow.
H
Enlargened station
model of X
Figure 4: Synoptic weather map
1.4.1 What is a synoptic weather map?
(1x1) (1)
1.4.2 Locate the area represented by the line running from A to B. Is this an
example of a steep or gentle pressure gradient? Provide a reason for your
(1+2) (3)
answer.
1.4.3 What type of pressure cells are shown by letter P and letter V.
(2x2) (4)
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GEOGRAPHY
1.4.4 ldentify the type of front shown by the letter C
(1x2) (2)
1.4.5 Determine the following weather conditions for the station model X:
1,4.5.1 Air temperature
(1x1) (1)
1.4.5.2 Dew point temperature
(1x1) (1)
1.4.5.3 Cloud cover
(1x1) (1)
1.4.5.4 Wind direction
(1x1) (1)
1.4.5.5 WNind speed
(1x1) (1)
Question 1.5 [15 marks]
1 answer
1 answer