Layers of the Earth

Question 1

What are the layers of the earth?

Answer 1

1. crust
2. mantle
3. outer core
4. inner core

Question 2

how thick is the crust?

Answer 2

It is a thin layer that can be 5km thin or 90km thin
normaly its 30km thin

Question 3

What is on the crust?

Answer 3

Mountains, beaches,oceans,lakes,rivers, tectonic plates

Question 4

How thick is the Mantle?

Answer 4

3000km thick.
It is the thickest layer.
It is 60% of the earths mass!

Question 5

How hot is the mantle?

Answer 5

The upper mantle is 500-900 celcius
The lower mantle 4000 celcius

Question 6

What is the mantle made of?

Answer 6

Hot Rock that flows like treade.

Question 7

What causes volcanoes?

Answer 7

The mantle leaks!

Question 8

What is the outer core made of?

Answer 8

Iron and nickel

Question 9

What is the temperature of the outer core?

Answer 9

Over 4000c as hot as the sun.

Question 10

What does the outer core do?

Answer 10

It moves around the inner core and creates a magnetic field.

Question 11

What is the inner core made of?

Answer 11

Iron and nickel!

Question 12

How hot is the inner core?

Answer 12

Over 5000 celcius

Question 13

How big is the inner core?

Answer 13

The radius 1220km

Question 14

What does the inner core do?

Answer 14

Engine room of the earth and produces a lot of heat

Question 15

What are the 4 layers of soil

Answer 15

1. Humus
2. Top soil
3. Subsoil
4. Bedrock

Question 16

What is humus

Answer 16

It is the top layer of soil and it is made up of rotting dead leaves and animals

Question 17

What is top soil?

Answer 17

Where plants grow their roots. There are very few rocks

Question 18

What is subsoil?

Answer 18

It is made of more rocks and stones in clay
This soil is full of nutirents

Question 19

What else can be in subsoil?

Answer 19

There may be fosils or tree roots may reach into the soil

Question 20

What is bedrock?

Answer 20

A mass of rock. This rock might be made up of granite, basalt, quartzite, limestone or sandstone and fossils.