What is wind?

wind_air_blow_bernoulli

Wind is a kind of weather. It is the movement of air, blowing from a particular direction. But have you ever thought about what makes the wind blow or where it comes from?

Wind is made by air moving around in the atmosphere – the gases that surround our planet. When these gases are warmer, they move higher up in the sky; when they are cooler, they stay closer to the Earth’s surface.

When the Sun shines on the Earth, the air warms up. Then, as it cools down it sinks again. We can feel it when cooler air moves to fill in the space that rising warm air leaves behind, and we call that air movement ‘wind’.

The strength of the wind is measured in ‘knots‘, which are also used to measure how fast things move at sea. The Beaufort Scale is used as a way of measuring wind speed and to describe how windy it is. When there is no wind, it is described as ‘calm’. The strongest wind is called a ‘hurricane’.

The Met Office has a great video about wind and a list of the top-10 windiest places in the UK.

One thought on “What is wind?

  1. Tay Aziz January 29, 2017 / 7:28 pm

    Love the photo!!

    Like

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s