Hurumanu - Wind Power

Extreme weather

Measuring weather.

Definitions:

 

Anemometer: Anemometer is a instrument for measuring the speed of the wind or of any current gas. 

Beaufort wind scale: The Beaufort scale is an measure that relates wind speed to observe conditions at sea or on land.

Typhoon: Typhoon is a tropical storm in Indian or Western Pacific oceans.  

Monsoon: Monsoon is a prevailing wind in the South and SE Asia.

Sudden change of weather:

MATERIALS 

1. 2x Sticks

2. Cello Tape

3. Pencil

4. 4x cups 

5. Pin

6. Sticky note

7. Scissors

STEPS

1.  Collect Materials 
2.   Tape the 2 sticks together to form a cross
3.   Tape the sticks onto the cups
4.   Plug the pin through the tape
5.   Stick the pin into the rubber of the pencil
6.   Then write your names on the sticky note and stick it onto your Anemometer. 

Group Investigation.

Groups size: 5 
Roles:

• Timekeeper
• Counter
• Recorder
• Anemometer Manager
• Wind Manager

1. Mount the anemometer in a place that has full access to the wind from all directions.
2. When the time keeper says "Go", the counter in each group will count how many times the marked cup passes them in one minute and write it down.
3. 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	15
3.	Grass Hill In Quad	10
4.	Tennis Court Gate	3

CONCLUSION:

On the Field it came up to 80 spins per minute, the wind speed was 13 to 20 and the Beaufort force was 3.

Near the old J block it came up to 60 spins per minute, the wind speed was 51 to 61 and the Beaufort force was 7. 

On the new grass hill it came up to 40 spins per minute, the wind speed was 40 to 50 and the Beaufort force was 6.

Then near the tennis court gate it came up to 12 spins per minute, the wind speed was 6 to 12 and the Beaufort force was 2.

In conclusion the field had the most spins which was 80 and the tennis court gate had the least spins which was 12. 

Wind

Beaufort Wind Scale

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 direction of wind smoke drift, but not by wind vanes.	Light
2	6-12	40	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.

	Spins per minute	Wind speed ( kph)	Beaufort Scale
Field	80	13-20	3
Old J Block site	60	51-61	7
Grass hill	40	40-50	6
Tennis Court Gate	12	6-12	2