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Understanding Air and Wind

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Questions and Answers

What is the name for the moving air that we can feel?

Breeze (correct)
Gale
Mist
Fog

When air is heated, what happens to it?

It expands and rises (correct)
It contracts and shrinks
It becomes lighter
It becomes denser

What happens to the balloon placed over a test tube in ice?

It remains the same
It shrinks (correct)
It expands
It pops

What do the water droplets on the outer surface of a cold water bottle indicate?

The presence of water vapor in the air (C) Signup and view all the answers

What causes lime water to turn milky when air is blown through it?

Presence of carbon dioxide in the air (B) Signup and view all the answers

What supports burning and is essential for all living organisms?

Oxygen (A) Signup and view all the answers

What is responsible for making an air-filled ball grow in size when inflated?

Air occupying space (A) Signup and view all the answers

What can be inferred from the behavior of two test tubes with balloons in hot water and ice?

Air expands and rises when heated, while it contracts when cooled (D) Signup and view all the answers

What happens when a torch light is put on in a dark place?

Tiny shining particles appear in the beam of torch light which are dust particles present in the air. (A) Signup and view all the answers

What is responsible for inflating the balloon placed over one test tube when it is submerged in hot water?

The hot water heats the air inside, causing it to expand and inflate the balloon. (A) Signup and view all the answers