What happens to wet clothes exposed to the heat (the sun) and air?
They dry (the water evaporates).
How can we feel air? Give one example.
Blowing air on our hand, riding bicycle etc.
What is wind?
Air that moves.
Where is air?
All around us
What do we call strong wind with by thunder, rain and lightening?
Storm
True or False: wind can help us and hurt us.
True
We should grow more___________ to keep the air fresh and clean.
plants/ trees
Who needs air?
All living things
Gentle wind is ____________
storm
hurricane
breeze
What do we use to check the direction of wind?
Wind vane
How do we use wind?
breathing, sail boat to sail, wind mills to move, kites to fly, dry clothes etc
Heat changes water into
Water vapor or steam.
Wind mills are used for ______________
To make electricity/ to grind grains/ to draw water from ground
Which instrument is used to measure speed of wind?
Anemometer