CONVECTION
Montāžas Teksta
- Hmmm,, I wonder if you can dig a hole right through and get right to the other side of the world! Wait! Whats the early made of?
- Come along with me and I can teach you about the layers of the Earth!
- Now listen up, there are many layers of the earth. There is the crust, the mantle, the inner core, and the outer core.
- How will I be able to remember all of those?
- Don't worry! I'm a REALLY great teacher hehe!
- As you may know, earth is lush and beautiful. This part of earth is the crust!
- Yeah! The crust on your pizza is the outermost area just like the crust on Earth!
- Just like the crust of my pizza heh!
- The next layer of earth is the mantle. This is the biggest layer. The mantle is a semi-solid. This means that the properties of the mantle act as a solid AND a liquid!
- Oooooo! That reminds me of the putty we played with in science class!
- This stage looks like the core. There is two layers of the core.
- Now, there is one thing you need to know before we move on to the most important part of this lesson. Hot particles and air rise because they are less dense. Cold particles and air sink because they are more dense.
- Actually, Keira that is a really good example of the core! The inner core is made of solid iron, and the outer core is made of liquid nickel iron and nickel.
- Like tootsie pops?!
- Yes! Thank you so much! Now I completely understand the layers of the earth and how they help each other.
- Oh! This kind of remind me of boiling water!
- Now, the last part of the lesson is convection. the inner and outer core warm the mantle. The semi-solid rock that is warmed goes up to the crust, and when it cools, its sinks back down to the bottom to the matle.
- Yep, exactly! Boiling water goes up, releases bubbles, and then goes back down to get warmed up again from the burner. I hope this has helped Keira! Bye!
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