Earth

The wind moves the _________________in the ocean

The wind moves the ______________________ to produce ____________________.

• windmill, electricity

• windmill, wind

• windmill, heat

Strong wind can damage the ________________ of a house.

Strong winds cause big _____________ in the ocean.

What is moving air?

• wave

• wind

• water flow

Which of the following does not occur in the natural water cycle?

• Water evaporates into water vapour.

• Rain comes down from the clouds.

• Water droplets cool down and turn into water vapour.

Which activity needs strong wind?

• 
• 
• 
• 

The water in a waterfall flows from a ________________ area to a ______________________ area.

• high, low

• low, high

• low,low

Air consists of gases such as_______________________________.

• carbon dioxide only

• oxygen and carbon dioxide.

• oxygen only.

Strong winds can cause __________________, ________________ and __________________________.

• fly a kite, big waves, destroy properties.

• big waves, destroy properties, threaten live.

• rotate a windmill, sailing boat, big waves.