Hurumanu - Wind Power
Measuring weather.
Definitions:
- Anemometer: A anemometer is an instrument for measuring the speed of the wind or any current of gas.
- Beaufort wind scale: It is an empirical measure that relates wind speed to observed conditions at sea or on land.
- Typhoon: A typhoon is an intense storm of a tropical origin.
- Monsoon: A monsoon is seasonally direct winds that are common in eastern and southern Asia.
- What is it when the weather is really nice and turns to hail called:
MATERIALS
- Two sticks
- 4 cups
- Pencil
- Pin
- Sellotape
- Sticky note
- Scissors
STEPS
- Get all of your materials from the teacher
- Tape the two sticks together forming an x
- Tape the 4 cups to the end of the sticks
- Put the pin into the tape that is in the middle of the two sticks
- Push the pencil into the pin/ Make sure that your pencil has a rubber on the end of it
- Put your sticky note onto one of the cups and write your name on it.
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 |
CONCLUSION:
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 lose 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
|
No comments:
Post a Comment
To support my learning I ask you to comment as follows:
1. Something positive - something you like about what I have shared.
2. Thoughtful - A sentence to let us know you actually read/watched or listened to what I had to say
3. Something helpful - how have you connected with my learning? Give me some ideas for next time or ask me a question.