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Questions and Answers
What causes winds to blow?
What causes winds to blow?
Warmer air rises because it is heavier than the surrounding air.
Warmer air rises because it is heavier than the surrounding air.
False
What type of air moves to replace the warmer air that has risen?
What type of air moves to replace the warmer air that has risen?
cool air
Winds blow because cold air moves to replace the __________ air that has risen.
Winds blow because cold air moves to replace the __________ air that has risen.
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Match the following terms with their descriptions:
Match the following terms with their descriptions:
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Study Notes
Wind Formation
- Winds form due to uneven heating of Earth's surface by the Sun.
- Different parts of land and sea absorb and release heat at differing rates.
- Warmer areas cause air to expand, become less dense, and rise.
- Cooler areas cause air to contract, become denser, and sink.
- This creates pressure differences, causing air to move from high-pressure areas (cooler air) to low-pressure areas (warmer air).
- This movement of air is wind.
Sea Breeze
- During the day, land heats up faster than the sea.
- This causes air above the land to rise, and cooler air from the sea moves in to replace it.
- This creates a sea breeze.
Land Breeze
- At night, land cools down faster than the sea.
- This causes air above the sea to rise, and cooler air from the land moves in to replace it.
- This creates a land breeze.
Wind Power
- Modern windmills are called wind turbines or wind generators.
- Wind is a renewable energy source.
- Wind turbines convert wind energy into electricity.
- Using wind power doesn't pollute the air.
- Wind power is used for various purposes like generating electricity, pumping water, milling grain, and sailing.
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Description
Explore the science behind wind formation, including the differences between sea and land breezes. Understand how varying heating patterns on land and sea contribute to air movement and pressure changes. Additionally, learn about the use of wind as a renewable energy source through wind turbines.