Kinds of wind and Air pollution

A light or gentle wind is called

• gale

• breeze

• cyclone

A cyclone is a

• wind with moderate speed

• storm with strong spinning wind

• pleasant movement of air

What does this experiment tell you about air.

• Cold air rises up and inflates the balloon

• The water vapour from mug inflates the balloon

• balloon inflates as hot air in bottle rises up

Wind is caused due to

• even heating of land and water

• uneven heating and cooling of land and water

• cooling of land

Coastal regions have

• Land breeze during the day and sea breeze at night

• Sea breeze during the day and land breeze during the night

• land breeze at day time and at night

Monsoon winds bring rain because

• The wind is too cold when it blows from land to sea

• The hot air rises up with water vapout

• Air from sea has lots of water vapour when it blows towards land.

Which of the gases given causes global warming?

• Carbon monoxide

• carbon dioxide

• sulphur dioxide

________________ mixes with rain water and causes acid rain.

• Sulphur dioxide

• Nitrogen dioxide

• carbon monoxide

Identify the tool shown in picture and its use.

• Anemometer- Measure wind speed

• Anemometer- direction of speed

• Wind vane- wind direction

Substance that can damage our health or environment

• chlorine

• pollutant

• natural gas