| Q1 | Q2 | Q3 | Q4 | Q5 |
F.7 GEOGRAPHY
REVISION TEST 1
Topic: Weather & Climate
Time allowed: 45 minutes Name: _________ ( )
Marks: 40 marks
Instruction: Answer all questions
I. Basic Concepts (23 marks)
1a. Add and the planetary wind system for spring equinox and summer solstice in the
below figure. Name the resultant wind system from spring equinox. (5 + 3 marks)
Spring Equinox Summer Solstice
Discussion was held in class already
1b. What are the main differences between the above two figures? Why? (3 marks)
Differences: - northward shifting of the wind belt
- SE trades -> SW trades
Reason: shifting position of overhead sun (0 -> 23.5 N)
2. “Temperature varies vertically and horizontally along latitude.” Discuss the validity of
this statement. (12 marks)
Temperature varies horizontally: (7 marks)
| Martime climate | Continental climate | |
| location | Coastal regions | Continental interior |
| Heat release & absorb | Slower since onshore wind | faster |
| T C in summer | cooler | hotter |
| T C in winter | warmer | colder |
2. Ocean Currents
| Cold ocean currents | Warm ocean currents | |
| Movement | equatorward | poleward |
| result | cooler | warmer |
| Significant period | summer | winter |
| e.g. | Peru (Peru current) | Japan (Japan current) |
Temperature varies vertically: (5 marks)
| Higher latitude | Lower latiatude | |
| Angle of solar incidence | small | Large |
| Types of ray | oblique | Vertical |
| Travelling distance of ray | longer | shorter |
| Energy lost during travelling (e.g. reflection, diffusion..) |
large | small |
| Resultant T C | lower | higher |
II. Case study: Hong Kong (17 marks)
3a. Hong Kong is hot and wet in summer with south-west wind being dominant and cold
and dry in winter with north-east wind being dominant. With the help of the
diagrams below, explain the reasons for such climatic characteristics in summer and
winter. (6 marks)
Source: New Geography 4B
| Summer | Winter | |
| T C in China | High | Low |
| Pressure in China | Low | High |
| T C in Australia | Low | High |
| Pressure in Australia | High | Low |
| Movement of wind | Australia -> China | China -> Australia |
| Types of wind (HK) | Onshore SW monsoon | Offshore NE monsoon |
| Resultant climate | Hot, wet, SW onshore wind | Cold, dry, NE offshore wind |
3b. What is the climatic system that affects the climate of Hong Kong? (1 mark)
monsoon
4. In some occasions in winter, the temperature of Hong Kong falls below 10 C.
a. What is the climatic phenomenon that Hong Kong is experiencing? (1 mark)
Cold front
b. Explain how the weather phenomenon in Q4a leads to cold weather in Hong Kong?
(4 marks)
c. What other changes might this weather phenomenon brought to Hong Kong beside a
rapid drop in temperature? (1 mark)
- heavy rain
5. In spring, advection fog is common in Hong Kong, with the help of the following figure,
explain its formation in Hong Kong in Spring. (4 marks)
- HK is having relatively cooler air in spring
- warm moist air passer over HK
- Warm air supplies enough water vapour for cold air to have condensation => fog
OR
- cooling of warm moist air -> condensation => fog
Source: New Geography 4B