Where does wind come from?

The video explains that the Earth's surface is heated unevenly by the Sun, leading to areas of different temperatures. Warm air rises, creating low pressure, while cool air descends, creating high pressure. This difference in air pressure causes wind, which moves from high to low pressure areas. Wind has many applications, such as flying kites, sailing, and generating electricity with wind turbines. Despite occasional challenges, wind is generally beneficial.

What happens to air when it is warmed by the sun?

• It becomes heavier and sinks.

• It contracts and becomes denser.

• It expands, becomes lighter, and rises.

• It remains at the same pressure.

How is wind created according to the video?

• By the movement of air from low to high pressure.

• By the rotation of the Earth.

• By the movement of air from high to low pressure.

• By the gravitational pull of the moon.

Which of the following is NOT a use of wind mentioned in the video?

• Cooling down the Earth's surface.

• Flying kites.

• Generating electricity with wind turbines.

• Sailing boats.

What is one challenge of wind mentioned in the video?

• It is unpredictable and cannot be harnessed.

• It can make life difficult at times.

• It always causes damage to structures.

• It is too weak to be useful.

What is the overall impact of wind according to the video?

• It is mostly a nuisance.

• It is only useful for generating electricity.

• It has no impact on human activities.

• It is mostly beneficial.