The structure of Earth is sometimes compared to what?
A peach
How many layers does Earth have, and what are they?
What is the innermost layer of Earth?
The core, the hottest part of Earth
How thick is the core and what is it made up of?
About 1,400 miles thick and made up of melted iron and nickel
What is the layer under the crust?
The mantle
What is the mantle?
Very hot, solid rock
What is the first layer of Earth?
The crust
What is the crust made up of?
3 kinds of rock - igneous, sedimentary and metamorphic
What state of matter is the inner core?
Solid
What state of matter is the outer core?
Liquid
What state of matter is the mantle?
Semi-solid (gooey)
What state of matter is the crust?
Solid