Wind
Answers are for parents and teachers.
1
Write the difference between breeze and monsoon in two sentences.
A breeze changes direction between day and night; a monsoon changes twice a year (summer–winter).
2
Pressure is 760 mm Hg at A and 752 at B. What is the difference and which way does the wind blow?
The difference is 8 mm Hg; from A to B.
3
A wind moving at 10 m/s covers how many metres in 1 minute?
600
4
With a parent observe and record the wind direction for three days (from a flag, tree or smoke).
The answer depends on observation; write the direction the wind comes from, such as westerly or southerly.
5
Write three uses of wind energy and one harm of wind.
Uses: sailing ships, windmills, wind power stations; harm: blows sand and buries fields.