Measuring weather.
Definitions:
- Anemometer:
- Beaufort wind scale:
Materials
- 2 sticks
- pencil
- 4 cups
- pin
- sellotape
- sticky note
- Cello tape the cups the sticks.X 2
- make a cross out of the sticks and cello take them together
- pin the cross tho the rubber on the pencil.
Group Investigation.
Groups size: 5
Roles:
Groups size: 5
Roles:
- Timekeeper
- Counter
- Recorder
- Anemometer Manager
- Wind Manager
- Mount the anemometer in a place that has full access to the wind from all directions.
- When the timekeeper says "Go", the counter in each group will count how many times the marked cup passes them in one minute and write it down.
- Repeat the above step four (4) times and record the number of spins on the chart.
FINDINGS
- Record how many times it spins and record it in the table below.
- You will need to time them and count the number of spins.
| Place name on school grounds | Number of Spins in 15 seconds | |
| 1. | Field | 20 |
| 2. | Old J Block site | 15 |
| 3. | Grass hill in the quad | 10 |
| 4. | Tennis Court gate | 3 |
- USING A4 PAPER DRAW YOUR RESULTS ON A GRAPH.
- TAKE A PICTURE OF THE GRAPH AND UPLOAD IT TO YOUR BLOG
WHICH IS THE WINDEST AREA AND WHY?
WHICH IS THE CALMEST AREA AND WHY?
WHERE IS THE BEST PLACE ON LAND TO BUILD A WINDMILL?
Wind
Beaufort
Force |
Wind Speed
(KPH) |
Spins
|
Indicators
|
Terms Used in NWS Forecasts
|
0
|
0-2
|
0
|
Calm; smoke rises vertically.
|
Calm
|
1
|
2-5
|
10
|
Shown by the direction of wind smoke drift, but not by wind vanes.
|
Light
|
2
|
6-12
|
40
|
The wind felt on face, leaves rustle; ordinary vanes moved by wind.
|
Light
|
3
|
13-20
|
80
|
Leaves and small twigs in constant motion; wind extends light flag.
|
Gentle
|
4
|
21-29
|
130
|
Raises dust and loose paper; small branches are moved.
|
Moderate
|
5
|
30-39
|
190
|
Small trees in leaf begin to sway; crested wavelets form on inland waters.
|
Fresh
|
6
|
40-50
|
250
|
Large branches in motion; whistling heard in telephone wires; umbrellas used with difficulty.
|
Strong
|
7
|
51-61
|
320
|
Whole trees in motion; inconvenience felt walking against the wind.
|
Strong
|
8
|
62-74
|
390
|
Breaks twigs off trees; generally impedes progress.
|
Gale
|
9
|
75-87
|
470
|
Slight structural damage.
|
Gale
|
10
|
88-101
|
550
|
Seldom experienced inland; trees uprooted; considerable structural damage occurs.
|
Whole gale
|
11
|
102-116
|
640
|
Very rarely experienced inland; accompanied by widespread damage.
|
Whole gale
|
12
|
117 or more
|
730+
|
Very rarely experienced; accompanied by widespread damage.
|
Hurricane
|
Based on your findings what was the Wind Speed and the Beaufort Wind Force for each area.
CONCLUSION:
On to field, there were 80 spins and the wind speed was 13-20 kph, the Beaufort scale was a 3
At j block, there were 60 spins and the wind speed was 0-2 kph, the Beaufort scale was a 0
On to field, there were 40 spins and the wind speed was 6-12 kph, the Beaufort scale was a 2
On to field, there were 12 spins and the wind speed was 10-20 kph, the Beaufort scale was a 1
