Hurumanu - wind power

Extreme weather

Measuring weather.

Definitions:

1.  Anemometer: An instrument for measuring the speed of the wind, or of any current of gas.
2. Beaufort wind scale: The Beaufort scale is an empirical measure that relates wind speed to observed conditions at sea or on land. Its full name is the Beaufort wind force scale
3. Monsoon: A seasonal prevailing wind in the region of South and SE Asia, blowing from the south-west between May and September and bringing rain.
4. Typhoon: A tropical storm in the region of the Indian or western Pacific oceans.
5. what is it when the weather is really nice and turns to hail: it is called climate variability because the weather can instantly change to anything.

MATERIALS 

1. two sticks
2. four cups
3. four strips of sellotape
4. one pin
5. one pencil with an eraser at bottom 
6. one sticky note

STEPS

1. Tape the cups on each end of the stick x2.  
2. make a cross when you have done.
3. stick a pin through the rubber at the top of the pencil. 

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 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.
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 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? the field because it has a cold climate there

WHICH IS THE CALMEST AREA AND WHY? the tennis court gate because there is a lot of friction stopping it

WHERE IS THE BEST PLACE ON LAND TO BUILD A WINDMILL? up high in the hills.

CONCLUSION:

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	80	13-20	3
Old J Block site	60	2	0
Grass hill	40	6-12	2
Tennis Court Gate	12	10-20	1

CONCLUSION: In science today we have been learning about wind. we have made some bar graphs about how strong the wether is in some place of the school, the wind is many different in different places because there are different strengths of wind everywhere in the school. sometimes the wind can be powerful but most of the time it is pretty average weather. the original spins per 15 seconds on the field was 20 the hill was 10 the old j block site was 15 and the last is tennis court gate it is 3 because of all the trees around it is stopping it from making the wind so powerful. the one that had the most speed out of all of them was the field reaching at 20. the second-highest was the old j block site reaching at 15 almost 20.