8.13.3 Letmedo it Complete the following activities to practise this skill.
8.13 SkillBuilder activity Interpret the wind roses in FIGURES3 and 4 to answer the following questions. Use the checklist provided to make sure you cover all aspects of the task.
FIGURE3 Wind rose for Melbourne, annual average at 3 pm
FIGURE4 Wind rose for Melbourne, annual average at 9 am
N
N
NW
NE
NW
NE
W CALM E
W CALM E
SW SE
SW SE
S
S
Calm
Calm
km/h
km/h
0–10 10–20 20–30 >30
0–10 10–20 20–30 >30
Scale factor – 30.0%
Scale factor – 30.0%
1. In which direction are the winds at the highest frequency for Melbourne, 9 am? 2. In which direction are the winds at the highest speed for Melbourne, 9 am? 3. In which direction are the lowest frequency winds for Melbourne, 9 am? 4. In which direction are the winds at the lowest frequency for Melbourne at 3 pm? 5. Compare and contrast the wind direction patterns for Melbourne at 9 am and at 3 pm. Checklist I have: • found the longest ray to determine the direction of wind with the highest frequency • found the widest ray to determine the direction of wind with the highest speed • worked out the general pattern and main features of wind direction and strength.
Jacaranda Humanities Alive 7 Victorian Curriculum Third Edition
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