Earth's Layers - Worksheet 3
Grade 4•Science•Earth's Layers
Aligned to: 4-ESS1-1
Answer the following questions about earth layers.
1.
Scientists cannot dig to Earth's core. How do they know what is inside Earth?
A.They guessed
B.They study how earthquake waves travel through Earth's layers
C.They looked through a telescope
D.They asked astronauts
2.
Why does the temperature increase as you go deeper into Earth?
A.The Sun heats the inside of Earth
B.Pressure and radioactive decay generate heat deep inside Earth
C.Underground fires heat the rock
D.Water underground makes it warmer
3.
Which layer of Earth do we live on?
A.Mantle
B.Outer core
C.Crust
D.Inner core
4.
What is the thickest layer of Earth?
A.Crust
B.Mantle
C.Outer core
D.Inner core
5.
What is Earth's core mostly made of?
A.Rock
B.Water
C.Iron
D.Air
6.
Earth's crust is the thickest layer.
7.
Earth has layers, like an onion.
8.
The outermost layer is called the .
9.
The thick layer below crust is called the .
10.
The liquid metal layer is called the .
11.
The center of earth is called the .