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Earth's Layers and Composition MP 2 Review

Total questions: 19

Worksheet time: 22mins

Name
Class
Date
1.

The thinnest layer of the Earth is the ___________.

a)

mantle

b)

crust

c)

core

d)

Asthenosphere

2.
Tectonic plates are made up of continental crust and ________ crust.
a)
continental
b)
oceanic
c)
plates
d)
mantle
3.

What is the core made of?

a)

steel

b)

iron

c)

aluminum

d)

iron and nickel

4.

What describes the outer core?

a)

solid

b)

liquid

c)

viscous

d)

gas

5.

Why is the inner core solid?

a)

its unknown

b)

what it's made of

c)

the pressure

d)

it is colder than the outer core

6.

What is the correct order (starting from the surface) of Earth's layers?

a)

crust, outer core, inner core, mantle

b)

mantle, outer core, inner core, crust

c)

crust, mantle, outer core, inner core

d)

outer core, inner core, crust, mantle

7.

What layer is a semisolid and acts like a plastic?

a)

Lithosphere

b)

Mantle

c)

Asthenosphere

d)

crust

8.

The oceanic floor is made of?

a)

Granite

b)

Basalt

c)

fossils

d)

Water

9.

What happens to pressure as we move from the crust to the inner core?

a)

Pressure Decreases

b)

Pressure Increases

c)

Nothing

d)

Initially it increases then slowly decreases

10.

Which layer of Earth has the GREATEST density?

a)

crust

b)

mantle

c)

outer core

d)

inner core

11.

This layer of Earth is solid Iron and Nickel

a)

Outer Core

b)

Mantle

c)

Inner Core

d)

Crust

12.
What is the name of the layer that contains the uppermost mantle and crust
a)
Asthenosphere
b)
Mesosphere
c)
Lithosphere
d)
Transosphere
13.
Scientists think that convection currents that move the plates flow in Earth's
a)
Continental crust
b)
oceanic crust
c)
Asthenosphere
d)
Lithosphere
14.
which one is hotter?
a)
the crust
b)
mantle 
c)
Inner core
d)

outer core

15.
What is the driving force to plate tectonics occurring when warm magma rises and cooler magma sinks? 
a)
An oceanic current
b)
A conventional current
c)
A convection current
d)
A magnetic current
16.
Identify layer  #20.
a)
mantle
b)

ocean crust

c)
inner core
d)
outer core
17.

Which layer of the earth creates the earth's magnetic field?

a)

Crust

b)

Mantle

c)

Outer Core

d)

Inner Core

18.

From which layer of the earth does lava come from?

a)

Crust

b)

Mantle

c)

Outer Core

d)

Inner Core

19.

What has allowed scientists to infer details about earths interior?

a)

Ocean waves

b)

Seismic waves

c)

tectonic plates

d)

the earths magnetic field