Weather In Space (the Rocky Planets): Crash Course Kids #43.1 - By Crash Course Kids
Transcript
| 00:09 | if you're packing for a trip to Hawaii , chances | |
| 00:11 | are you're gonna bring some stuff like a bathing suit | |
| 00:13 | and shorts , a few t shirts and flip flops | |
| 00:16 | and your good buddy . Me of course , but | |
| 00:18 | if you're going to Antarctica , your suitcase probably looks | |
| 00:21 | a lot different . You'll need more layers , a | |
| 00:23 | big heavy coat , a scarf gloves , all of | |
| 00:25 | the warm , fuzzy things . But what if you're | |
| 00:27 | traveling to Mercury , what do you need to pack | |
| 00:30 | for that ? Okay , A spacesuit . Yeah , | |
| 00:32 | but let's just pretend we can just walk around on | |
| 00:34 | mercury like we do here on Earth without a space | |
| 00:37 | suit . What kind of weather would we be dressing | |
| 00:39 | for ? We know there's weather on Earth and the | |
| 00:41 | fact is there's weather on other planets to some of | |
| 00:44 | its familiar like wind , but some of it is | |
| 00:46 | a little more well extreme . So what is the | |
| 00:50 | weather like on other planets ? Well , before we | |
| 00:57 | leave Earth to find out , can I get a | |
| 00:59 | reminder of what exactly whether is again ? Oh right | |
| 01:02 | . Weather is the condition of the atmosphere on different | |
| 01:04 | parts of the planet . Even though there's only one | |
| 01:07 | atmosphere on earth , the weather isn't the same all | |
| 01:09 | over the world . There are many different factors that | |
| 01:12 | can change the atmosphere in a certain area and together | |
| 01:15 | they determine what the weather is like from one minute | |
| 01:17 | and from one place to the next . These factors | |
| 01:19 | include temperature , humidity , wind speed and direction and | |
| 01:22 | lots of other things . But when you're talking about | |
| 01:25 | the overall weather patterns for a certain region of the | |
| 01:28 | world , you're talking about that areas , climates , | |
| 01:31 | weather is the minute by minute changes in the atmosphere | |
| 01:34 | . Climate is what the weather's like over a long | |
| 01:36 | period of time in a specific area . Okay , | |
| 01:39 | got it . You know , what else has got | |
| 01:40 | it , It being weather and climate , the other | |
| 01:43 | planets in our solar system . Let me tell you | |
| 01:46 | , there are some freaky weather situations happening up there | |
| 01:48 | . So why don't we take a trip to each | |
| 01:50 | planet to see what they've got going on , weather | |
| 01:52 | wise ? Let's start with those that are closest to | |
| 01:55 | the sun , Mercury , venus and mars , otherwise | |
| 01:58 | known as the rocky planets , which by the way | |
| 02:00 | , is a pretty sweet band name . These three | |
| 02:02 | planets all have one thing in common with earth . | |
| 02:04 | They're all solid worlds with hard rocky surfaces that if | |
| 02:07 | you ever went there , you could stand on . | |
| 02:09 | Let's take a virtual trip to each one to see | |
| 02:11 | how hot , cold , windy or whatever these three | |
| 02:14 | planets are first . Hello , Mercury . Or should | |
| 02:22 | I say murder ? If you were thinking Mercury would | |
| 02:24 | be a super hot place because it's the closest planet | |
| 02:27 | to the sun . Well , you're half right , | |
| 02:30 | Mercury is the closest planet to the sun , but | |
| 02:33 | it's not actually the hottest temperatures on Mercury can go | |
| 02:36 | from a super chili 170 degrees below zero at night | |
| 02:39 | to a very warm 425 degrees Celsius during the day | |
| 02:44 | . Why the extreme changes during its rotation when one | |
| 02:47 | side of mercury is facing the sun . That side | |
| 02:49 | gets super hot , but Mercury doesn't have a lot | |
| 02:51 | of gases around it like the Earth does without these | |
| 02:54 | gases to hold in heat , the planet can get | |
| 02:56 | really , really , really cool too , especially on | |
| 02:59 | the side that's facing away from the sun . So | |
| 03:02 | the planet's proximity to the sun , combined with its | |
| 03:04 | thin atmosphere give Mercury the biggest changes in temperatures of | |
| 03:08 | any of the planets . Things get even more extreme | |
| 03:10 | on venus , the next closest planet to the sun | |
| 03:13 | . We've sent probes to venus to take pictures of | |
| 03:15 | what it looks like and they show us that the | |
| 03:17 | planet is rocky and covered with thick clouds , but | |
| 03:19 | it doesn't have any life on it because venus is | |
| 03:22 | extremely hot . In fact , even though it's not | |
| 03:26 | the closest to the sun , venus is the hottest | |
| 03:28 | planet in our solar system , with temperatures reaching as | |
| 03:31 | high as 460 degrees Celsius . Why is venus so | |
| 03:34 | hot because of something called the greenhouse effect ? The | |
| 03:37 | greenhouse effect is what happens when light from the sun | |
| 03:39 | hits the surface of a planet and warms it up | |
| 03:41 | that he tries to bounce back into space . But | |
| 03:43 | a guest called carbon dioxide traps a lot of it | |
| 03:46 | around the planet keeping it warm . It's sort of | |
| 03:48 | like what happens inside your car when you keep your | |
| 03:50 | windows up on a hot day and next time you | |
| 03:52 | complain about it raining , you should know that it | |
| 03:54 | rains sulfuric acid on venus . Yeah , instead of | |
| 03:58 | water , venus's clouds are made up of corrosive sulfuric | |
| 04:01 | acid . That burning acid doesn't reach the surface though | |
| 04:03 | because venus's toasty temperatures causes the acid to evaporate before | |
| 04:07 | it has time to hit the ground . So yeah | |
| 04:11 | , okay , let's cool off and head to the | |
| 04:13 | next and final plan it for the day . Mars | |
| 04:16 | , the red planet is known for brewing up some | |
| 04:18 | serious dust storms . Earth has dust storms too , | |
| 04:21 | but not like the ones on MArs on MArs , | |
| 04:23 | a dust storm can get pretty intense in a matter | |
| 04:25 | of hours and take over the entire planet within a | |
| 04:28 | few days . A lot of martian dust storms actually | |
| 04:30 | come from the same place , Hellas Basin , the | |
| 04:32 | name of a deep crater on MArs . The crater | |
| 04:34 | was formed billions of years ago when a huge asteroid | |
| 04:37 | hit the surface of the planet . The crater is | |
| 04:39 | filled with dust at the bottom , but the temperature | |
| 04:41 | at the bottom of the crater can be 10 degrees | |
| 04:44 | cooler than the temperatures at the top . This difference | |
| 04:46 | in temperature creates wind that picks up the dust , | |
| 04:49 | which then creates a storm that takes over the basin | |
| 04:52 | and then the planet . And you thought your room | |
| 04:56 | was dusty . After all these high and low temperatures | |
| 04:59 | , acid rain and dust attacks . I'm ready for | |
| 05:01 | a good old fashioned thunderstorm . So let's head home | |
| 05:04 | to Earth and now you know what to pack . | |
| 05:10 | If you ever have to take a trip to mercury | |
| 05:11 | , venus or mars , you gotta prepare for extreme | |
| 05:14 | swings in temperature on mercury face , meltingly hot heat | |
| 05:17 | on venus and nasty planet wide dust storms on mars | |
| 05:21 | , but just like our planet , the rocky planets | |
| 05:23 | , I'll have weather and climate of their own . | |
| 05:25 | Sometimes they're similar to what we have here on Earth | |
| 05:28 | , and sometimes they're more extreme . And speaking of | |
| 05:31 | extreme , check out our next episode to find out | |
| 05:33 | what the weather's like on gas giants , planets with | |
| 05:36 | no surface at all . I'll leave you with one | |
| 05:39 | teeny tiny hint on what to expect . Diamond rain | |
| 05:43 | . See you soon . |
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Weather In Space (the Rocky Planets): Crash Course Kids #43.1 is a free educational video by Crash Course Kids.
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