Earth 5.1

Indicate which part of Earth’s internal structure each statement is describing.

• Mantle

• This layer is entirely solid.

• Inner core

• The thickness of this layer changes from one area to the next.

• Outer core

• Depending on the depth, this layer is made of solid or melted rocks.

• Crust

• This is the hottest layer.

Complete this diagram of Earth’s internal structure.

a

b

c

d

Outer core

Magma

Atmosphere

Crust

Mantle

Hydrosphere

Inner core

Earth’s core is made of?

• Iron and nickel

• Silicon and oxygen

• Carbon and hydrogen

• Magnesium and aluminum

Magma is made of

(a)   . It looks like a ​ ​ (b)   . It can be found in the ​ (c)   . It comes out of ​ (d)   as lava.​

• molten rock
• thick paste
• mantle
• volcanoes
• crust
• melted plastic
• solid rock

Which layer of Earth is directly beneath the crust?

• Mantle

• Outer Core

• Inner Core

• Atmosphere

What is the state of matter of the outer core?

• Solid

• Liquid

• Gas

• Plasma

The mantle is made of magma and solid rock.

• True

• False

Earth's core is completely solid.

• True

• False

The solid inner core is colder than the liquid outer core

• True

• False

Lava and magma are both made of partially melted rock.

• True

• False