Paxi – The Greenhouse effect — Transcript

Full transcript

1. 0:00[Music]
2. 0:10hello paxy here i bet you missed your
3. 0:14favorite space explorer didn't you today
4. 0:17i want to talk to you about something
5. 0:19really important come with me
6. 0:23[Music]
7. 0:24can you see the thin layer surrounding
8. 0:26earth
9. 0:27it's the atmosphere it contains the air
10. 0:30we breathe made of gases like oxygen but
11. 0:33it also acts as a protection to keep us
12. 0:36warm from the deep cold of space and
13. 0:39makes life on earth possible
14. 0:41in fact the atmosphere is like a
15. 0:43greenhouse around our planet
16. 0:46keeping its temperature just right
17. 0:49not too hot and not too cold
18. 0:52but
19. 0:53what's a greenhouse
20. 0:55greenhouses are those funny looking
21. 0:57houses with glass walls and roofs that
22. 1:00you see in gardens and fields they're
23. 1:02called green because they're used to
24. 1:05grow flowers and vegetables
25. 1:07sunlight shines on the glass and warms
26. 1:10the air inside making it nice for the
27. 1:12plants to grow the glass also prevents
28. 1:15the heat from escaping
29. 1:17keeping the temperature just right for
30. 1:19the plants
31. 1:20some of the gases present in the earth's
32. 1:22atmosphere called greenhouse gases work
33. 1:26just like the glass roof of a greenhouse
34. 1:28for your planet they let the right
35. 1:30amount of warmth from the sun reach the
36. 1:33surface and trap some of it in so that
37. 1:36not all the heat produced by the sun
38. 1:38goes back up into space and this is what
39. 1:41we call the greenhouse effect but
40. 1:44scientists all over the world are
41. 1:46worried because the greenhouse effect is
42. 1:49becoming too strong the earth is getting
43. 1:52warmer and too fast
44. 1:54faster than at any other time in the
45. 1:56earth's entire history
46. 1:59but
47. 2:00why come with me to find out
48. 2:04human activity increased the amount of
49. 2:06greenhouse gases in the atmosphere to
50. 2:08dangerous levels especially carbon
51. 2:11dioxide
52. 2:13how
53. 2:14by burning oil coal and natural gas for
54. 2:16energy
55. 2:18by driving cars
56. 2:23by polluting the environment with
57. 2:25factories
58. 2:26and raising huge quantities of animals
59. 2:29for the food industry
60. 2:40humans also cut down trees to build
61. 2:43houses
62. 2:45or use the land to raise cattle or plant
63. 2:48crops
64. 2:52this is also making carbon dioxide rise
65. 2:55because trees are good at absorbing this
66. 2:57gas and taking it out of the atmosphere
67. 3:00so the less trees we have the less
68. 3:03carbon dioxide is absorbed and the more
69. 3:06of it we have in the atmosphere all this
70. 3:09carbon dioxide is making the greenhouse
71. 3:11effect too powerful
72. 3:13and increasing temperatures on earth by
73. 3:16trapping too much heat in
74. 3:19so how can we fix this problem well the
75. 3:22good thing is that lots of countries are
76. 3:24working together to change this and
77. 3:26reduce the amount of carbon dioxide they
78. 3:29produce
79. 3:30another good thing is that you can help
80. 3:32as well
81. 3:34walk jog use your bike or skateboard to
82. 3:37go places instead of getting a ride in a
83. 3:39car don't waste clean water because it
84. 3:42takes a lot of energy to produce it turn
85. 3:45off your tablet computer or the tv when
86. 3:48you're not using it turn off the lights
87. 3:50when you leave the room unplug and last
88. 3:54but not least recycle everything you can
89. 3:58you can make a difference
90. 4:01so
91. 4:02today we learned that
92. 4:04the greenhouse effect makes life on
93. 4:06earth possible
94. 4:08human activity increased the greenhouse
95. 4:10gases especially carbon dioxide
96. 4:14this made the greenhouse effect too
97. 4:17powerful raising temperatures on earth
98. 4:20humans need to reduce the amount of
99. 4:23carbon dioxide they produce
100. 4:25and there is lot you can do to help fix
101. 4:28this problem
102. 4:31see you next time for our next adventure
103. 4:53[Music]
104. 5:06you