wind power

Extreme weather

Measuring weather.

Definitions:

1. Anemometer:
2. Beaufort wind scale:

MATERIALS  

1. 4 Dishes  
2.   2 Sticks
3.   Tape
4.   Pin
5.   Pencil  

STEPS

1.   Grab all the materials.
2.   First Stick the 4 dishes to each side of the stick. Make sure the dishes are opposite sides.
3.   Secure with tape.
4. Stick the middle of the sticks together, make sure it is secured tight.  
5. Stick a pin through the tape and into the top pencil. Make sure the tape isn't on the pencil so it could spin right. 
6. Experiment with the wind. 

Group Investigation.

Groups size: 5 
Roles:

• Timekeeper ( watch)

• Counter

• Recorder ( Chromebook or refill )

• Anemometer Manager ( Anemometer)

• Wind Manager

Instructions:

• Go to the measuring place and set up your wind gauge.
• Make sure everyone in your group is ready to start their roles.
• Record how many times it spins and record it in the table below.
• Count the number of spins in 15 seconds.
• Record it on your chart.

FINDINGS

	Place name on school grounds	Number of Spins in 15 seconds
1.	Field	11
2.	Old J Block site	0
3.	Grass hill in quad	0
4.	Tennis Court gate	1

• 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?

CONCLUSION:

the field has many spins because it has an open space. the old j block site have a 0 wind because of the trucks or the fences. the grass quad has 0 wind as well I think its because of the building around it like the new Kahui is blocking the wind. the tennis court has 1 spin I think because of the trees at the metal fences and i think this is why it only has 1 spin.

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 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

	Spins per minute	Wind speed ( kph)	Beaufort Scale
Field	44	13-20	3
Old J Block site	0	0-2	0
Grass hill	0	0-2	0
Tennis Court Gate	4	0-2	0

The Boy who Harnessed the Wind: 1:36

Wind Farm construction