4E5N Geography Elective Core Assignment 3Variable weather and changing climate – A continuing challenge

Topic: Weather and climate Relative humidity, rainfall and wind systems

Skills/Knowledge: - Interpret choropleth maps (refer to TB pg 146)- Explain the relationship between temperature and relative humidity.- Account for the formation of relief rain and convectional rain.- Account for the formation of local winds – land breeze and sea breeze.- Account for the formation of monsoon winds – southwest monsoon and northeast monsoon

Feedback:3 – Excellent!2 – Reaching there, please continue to work on the area identified.1 – Please listen to feedback, work on correcting the area(s) of concern and clarify ASAP.

Observation Feedback

Interpretation of question 1 2 3

Content Knowledge 1 2 3

Understanding of concept 1 2 3

Coherence and organisation 1 2 3

Handwriting 1 2 3

Effort 1 2 3

Time management 1 2 3 NA

Additional comments from your teacher:

Student Reflection:

1 Star (what way you did well) 1 Wish (what you could improve on based on teacher’s feedback)

This has to do with how you answered. Do not just blindly copy the observation above!

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1. State and account for the relationship between temperature and relative humidity.

[3]

2. Study Fig. 2.18. (Refer to Tb pg 82 for the coloured map)

(a) With the aid of the world map at the back of the textbook, describe the global distribution of cloud cover in June.

[3]

(b) Which areas were most likely to received precipitation in June? [3]

3. Is convectional or relief rain most likely to occur in Singapore? Explain your answer.

[3]

4. Use an annotated diagram to explain the formation of relief rain. [5]

5. Draw a labelled diagram and explain the formation of sea breeze. [5]

6. Study Fig. 1, which shows the formation of monsoon wind.

Fig. 1

Using Fig. 1, state the direction of monsoon wind and explain how it is formed. [6]

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1. State and account for the relationship between temperature and relative humidity.

[3]

Inverse relationship/ negative correlation: The higher the temperature, the lower the relative humidity.

Warm air can hold more water than cool air. When temperature increases and the amount of water vapour in the air remains the same but the capacity of the air to hold water vapour will increase. (Thus, relative humidity decreases as temperature increases if the amount of water vapour in the air remains the same.)

3. Study Fig. 2.18. (Tb pg 82)

(a) With the aid of the world map at the back of the textbook, describe the global distribution of cloud cover in June.

[3]

(b) Which areas were most likely to received precipitation in June? [3]

(a) Areas found between the Tropic of Cancer and Tropic of Capricorn have low percentage of cloud cover of about 0 to 50%.Include places such as Australia and the Middle East (0 to 25%). Regions located along the Equator has high cloud cover at 76 to 00%

(b) The areas most likely to receive precipitation are those with a high percentage of daytime cloud cover (indicated in blue). These areas are found near the Equator such as Malaysia and Singapore.Other areas that are likely to receive precipitation during June are Canada and

South Asia.

4. Is convectional or relief rain most likely to occur in Singapore? Explain your answer.

[3]

Rainfall in Singapore is likely to be convectional rain. This is because temperatures are regularly high which allows for the intensive heating of the earth’s surface and therefore higher rates of evaporation. Also, there are no landforms such as a mountain range which forces warm,

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moist air to rise, a condition necessary for the formation of relief rain.

5. Use an annotated diagram to explain the formation of relief rain. [5]

6. Draw a labelled diagram and explain the formation of sea breeze. [5]

7. Study Fig. 1, which shows the formation of monsoon wind.

Fig. 1

(a) Using Fig. 1, state the direction of monsoon wind and explain how it is formed. [6]

Southwest monsoon Takes place between June and sept where central Asia is experiencing summer, forming an area of low

pressure while Australia is experiencing winter, forming an area of high pressure (as air moves from an area of high to low pressure, air from Australia will

thus moves to the Indian sub-continent and Central Asia as southeast monsoon

as the wind crosses the equator, it gets deflected to the right, forming the southwest monsoon heading for Central Asia.

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