What is wind? Palm trees blowing during a storm. (Thinkstock)
What is wind?
Lexile

You asked us, what exactly is wind and how does it get blown around?
 
Wind is a major player here on Earth. It sculpts landscapes, brings rain and uproots trees along with lives.
 
So what's behind this invisible force that can tickle a cheek one second, and topple a building the next?
 
Good question. Wind is just air moving around. And air is just a bunch of dancing molecules. Gravity pulls down on the molecules. The closer they get to the Earth's surface, the more tightly packed they become.
 
Air that's under high pressure like that naturally flows to areas of low pressure. The bigger the difference in pressure, the faster the air flows. And that, my fellow geeks, is wind.
 
But what causes one area to be higher pressure than another? The sun. It heats the Earth's surface unevenly, creating areas with warmer air, which rises, and cooler air that then rushes in.
 
All of these air movements happen at both local and global scales. And of course, it's all a lot more complicated than all of this, making wind and weather a little bit unpredictable.
 
Which is why I never leave home without my trusty cape.

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CRITICAL THINKING QUESTION
How can wind both uproot a tree and someone's life?
Write your answers in the comments section below


COMMENTS (166)
  • jeysong-612-
    4/07/2016 - 08:35 a.m.

    If wind was to rip a tree and its roots from the ground, the tree would fall. Over time this tree would begin decaying or "dying". If its roots are not in the ground, the tree can't collect water and nutrients. Similar to a tree's life, if a person is uprooted they are utterly gone. Their life and soul has left the body, only to be reformed again in a different body. 4/7/16

  • johnc-wes
    4/07/2016 - 09:10 a.m.

    Because air is just moving around. It's a bunch of danceing molecules. And if the air pressure is high it could of been dangerous or fast.

  • samanthas-1-ste
    4/07/2016 - 11:02 a.m.

    I actually just learned about wind in science class not too long ago. I know it can tear things apart depending on how high the wind speeds are and it is all because of uneven heating of the Earth's atmosphere.

  • ashleef-
    4/07/2016 - 11:15 a.m.

    If the wind is strong enough it can knock down houses trees and even cause hurricanes. If the wind blows a tree on someone's house when there in it then it's very likely that they are going to die or at least get injured. Sometimes if the wind is really strong it could even blow you around as well.

  • thomash-rob
    4/07/2016 - 01:56 p.m.

    wind can uproot a tree or even someones life by the pressure of the wind. it could also happen by the curent or direction the wind is blowing.the pressure could be high or low due to the higher or lower difference.

  • pabloc-612b-
    4/07/2016 - 02:18 p.m.

    How fast does the wind have to go to knock down a building?

  • lamontv-wes
    4/07/2016 - 02:29 p.m.

    Wind is in the air when it blows the air it is wind like tornadoes.

  • drewt-bru
    4/07/2016 - 03:12 p.m.

    There is only one anwser to this article and it is Love, air, and paper!



















  • darieny-ver
    4/07/2016 - 03:25 p.m.

    If it is powerful enough by having a good differential between high and low pressure, wind has the power to do that.

  • sean1116-byo
    4/07/2016 - 08:44 p.m.

    This was a very interesting article. I enjoyed reading about wind and how it is moved around.i haven't really know much about wind. I am excited to see more articles about science and nature.

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