Page 96 - science
P. 96
Making and testing an anemometer
An anemometer tells you how strong the wind is
blowing. This is the wind speed.
The cups of the anemometer spin around fast in a strong wind.
1 Design and make an anemometer.
Test that your anemometer spins.
You can blow on it or use a hair drier to test it.
2 Take your anemometer outside and measure
the speed of the wind.
Talk about any
Count how many times it spins in 10 seconds. patterns in your
3 Measure the wind every day for five days. results. Was every
day windy?
Write down your results in a table.
Stretch zone
Science fact
Why is it important to be able to predict the
weather? The strongest
winds on Earth
have been
Key idea measured at
By measuring weather over time we can look over 370
for patterns and predict what it is going to be kilometres per
like in the future. hour. 5 Plants and the Seasons
Check how much you know.
Try the puzzles on pages 98–99.
97
■ For more activities, go to Workbook 1 page 97.
