Air Quality and Wind Concepts

Air is essential for life, composed of gases like oxygen and carbon dioxide. It has weight, aids in burning, and can be polluted by dust and emissions. Clean air practices include using covered bins, maintaining vehicles, and growing plants. Wind, a form of moving air, varies in speed and direction, influencing weather conditions.

What is air primarily composed of?

• A mixture of gases

• Only carbon dioxide

• Only oxygen

• Only nitrogen

How can we demonstrate that air has weight?

• By using a thermometer

• By observing a burning candle

• By balancing balloons on a stick

• By measuring air pressure

Why is oxygen important for burning?

• It cools down the fire

• It extinguishes the fire

• It is a fuel for fire

• It is needed to sustain combustion

What is a simple way to reduce air pollution?

• Using more plastic

• Checking vehicles regularly

• Burning more coal

• Increasing industrial emissions

What should be done with garbage to prevent air pollution?

• Dispose of it in covered dustbins

• Throw it in rivers

• Leave it on the streets

• Burn it in open areas

What is the term for moving air?

• Wind

• Gale

• Breeze

• Storm

How can you determine the direction of the wind?

• By using a compass

• By listening to the sound of the wind

• By observing the movement of tree branches

• By measuring temperature

What is a gentle and slow wind called?

• Hurricane

• Gale

• Breeze

• Storm

Why is it important to keep the surroundings clean?

• To increase air pollution

• To keep the air clean

• To attract more insects

• To reduce oxygen levels

What role do plants play in air quality?

• They reduce oxygen levels

• They increase air pollution

• They block sunlight

• They make the air fresh and clean