Paxi explores wind — Transcript

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1. 0:00[Music]
2. 0:12hello it's your friendly space Explorer
3. 0:16paxi of all the fun outdoor activities
4. 0:20to do on this beautiful planet
5. 0:23Earth flying kites is one of my
6. 0:27favorites to fly a kite you need
7. 0:30wind wind is just air moving let's see
8. 0:35how that
9. 0:36happens you can't see it with your eyes
10. 0:40but air is a mix of different gases
11. 0:42which are all around you such as the
12. 0:45oxygen we
13. 0:47breathe the weight of these gases pushes
14. 0:50down on Earth and creates air
15. 0:53pressure If pressure changes the air
16. 0:56starts to move I'll show you how
17. 1:00this is the equator the part of the
18. 1:02earth that receives the most
19. 1:05sunlight the sun warms the air making
20. 1:08the gases spread out and Rise into the
21. 1:11atmosphere this creates an area of low
22. 1:14pressure on the
23. 1:17surface here at the poles it is cold so
24. 1:20the gases stay close together and push
25. 1:23down even more on Earth creating an area
26. 1:26of high pressure air always moves moves
27. 1:30from an area of high pressure to an area
28. 1:33of low pressure for example on the
29. 1:36Earth's surface from the cold poles
30. 1:38towards the hot equator that's when we
31. 1:41have wind but on its way the air gets
32. 1:44twisted by the rotation of the earth so
33. 1:47wind can come from all
34. 1:50directions wind is a major part of the
35. 1:53weather it can bring heat or storm
36. 1:58clouds there are different ways to
37. 2:00measure the
38. 2:01wind let's find out more about
39. 2:05this we can measure winds from space
40. 2:08using satellites like
41. 2:11eolus the first one that directly
42. 2:14studied the air that
43. 2:15moves it used a laser that sent out and
44. 2:19created bright lights to do
45. 2:22this we can also measure wind from Earth
46. 2:26you've probably seen a wind Vein on
47. 2:28homes that shows which Direction the
48. 2:30wind is
49. 2:31blowing weather stations have a similar
50. 2:34device called an
51. 2:37anemometer that tells you how fast and
52. 2:39in what direction wind
53. 2:42flows weather balloons also measure wind
54. 2:45speed and direction when Rising through
55. 2:48the
56. 2:49atmosphere more than a thousand balloons
57. 2:51are sent up every day all over the world
58. 2:54to get a big picture of wind
59. 2:57[Music]
60. 3:00Al together this data is used to create
61. 3:03the weather forecast you can check to
62. 3:05plan the best day to fly a
63. 3:08kite today we
64. 3:11learned wind is simply air in
65. 3:16motion air is a mix of gases and the
66. 3:19weight of these gases pushing down on
67. 3:22Earth creates air
68. 3:24pressure when it's warm gases in the air
69. 3:28rise and create create an area of low
70. 3:32pressure when it's cold gases in the air
71. 3:36sink and create an area of high
72. 3:39pressure Wind forms when air moves from
73. 3:42an area of high pressure to an area of
74. 3:46low
75. 3:47pressure wind can be measured from space
76. 3:50using satellites like
77. 3:53eolus wind can be measured on Earth
78. 3:55using tools like wind veins and weather
79. 3:58balloons
80. 4:00wind is a major part of the weather and
81. 4:03can bring heat or storm clouds see you
82. 4:07soon to show you more incredible things
83. 4:10about your planet and the universe