Welcome to Lesson 1! If you have not seen this video at home yet, please do it now. Read the transcription if you need it, in order to understand the content of the video:
0:06 Dr. Binocs..
0:12 The best part of a pizza is its crust!
0:20 Just like this pizza, the earth too has a crust, but with no cheese in it.
0:27 So let's learn something about the structure of the earth today.
0:31 It consists of the Crust, Mantle and Core!
0:38 This is the Earth's Crust.
0:40 It consists of all kinds of rocks, soil and everything you see above the earth's surface!
0:47 You will be surprised to know that the crust, that is the land on which we walk
0:53 is almost three times thicker than the crust under the oceans.
0:58 And it extends to about 25 miles.
1:04 The earth's crust floats on this layer which is called the Mantle.
1:09 It is made of thick, solid, rocky substance
1:12 and amounts to about 85% of the total mass of earth.
1:19 The first 50 miles of the mantle consist of very hard, rigid rocks.
1:24 The next 150 miles are made up of super-hot solid rocks.
1:30 Below that for the next several hundred miles,
1:33 the earth's mantle is believed to be made up of very solid and sturdy rock materials.
1:41 The mantle is about 1800 miles thick and by far the largest layer of earth.
1:50 The earth's outer core is made up of super-hot liquid molten substance called Lava.
2:00 This lava is believed to be made of iron and nickel.
2:05 It extends to a depth of 3000 miles beneath the earth's surface.
2:12 And finally, we have reached earth's inner core.
2:17 The inner core extends another 900 miles towards the center of the earth.
2:23 It is believed that this inner core is a solid ball made of iron and nickel.
2:32 The crust occupies less than 1% of earth's volume.
2:38 The inner core is the hottest part of the earth
2:41 and it is as hot as the surface of the sun.
2:45 Surprising, isn't it?
2:47 Looks like it's time for me to Zoooom out!
2:50 Before I get baked in this heat.
2:53 Tune in next time for more fun facts!
Did you like the video? Now it is time to see if you have learnt very single concept about the layers of the Earth. Are you ready? Pick your phone, tablet or computer and follow the instructions to play the Kahoot placed at the button bellow.
How did it go? Did you win? Contratulations! Or maybe you didn't, but don't worry, you will have more chances!
This is the last activity related to the Layers of the Earth. First of all, you will need to work in groups of 4 members, and then you need to pick play dough, because the next activity is related to Arts and Crafts. Follow the link placed at the button bellow (Activity 2) in order to go to the activity template.