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NGSS Chem IS2T3: What's Inside the Earth

Total questions: 36

Worksheet time: 21mins

Name
Class
Date
1.

The center layer of the Earth is

a)

Outer Core

b)

Inner Core

c)

Mantle

d)

Core

2.

Which layer of the Earth is the THINNEST?

a)

Mantle

b)

Inner Core

c)

Outer Core

d)

Crust

3.

Which layer of the Earth is the THICKEST?

a)

Crust

b)

Mantle

c)

Inner Core

d)

Outer Core

4.

Continental crust is made of mostly

a)

Basalt

b)

Granite

c)

Magma

5.

What is Earth's core made of

a)

Granite

b)

Iron & Nickel

c)

Basalt

6.

What is the LEAST dense layer of the Earth?

a)

Crust

b)

Mantle

c)

Inner Core

d)

Outer Core

7.

What is the MOST dense layer of the Earth?

a)

Crust

b)

Mantle

c)

Inner Core

d)

Outer Core

8.

Waves travel at different speeds through the Earth's interior. What property distinguishes the Earth's crust, mantle, and core?

a)

mass

b)

pressure

c)

composition

d)

temperature

9.

Like the layers of the ocean, the Earth's crust is divided into part based on physical properties. Which of the following statements best describes a layer of the Earth?

a)

The asthenosphere has the greatest density

b)

The mesosphere has the least density

c)

The outer core has the least density

d)

The inner core has the greatest density

10.

Where on the ocean floor is new ocean crust being created?

a)

the continental shelf

b)

the continental slope

c)

the deep ocean trenches

d)

the mid-ocean ridges

11.

The movement of the two continents as shown in picture can best explained by

a)

plate tectonics

b)

coastal flooding

c)

magnetic changes

d)

volcanic eruptions

12.

Most earthquakes and volcanoes occur in areas of the Pacific Ocean called the "Ring of Fire." Scientists agree that the reason for this is

a)

That part of the Earth is hotter than all other parts of Earth.

b)

A large number of people live in these areas.

c)

The ocean weighs so much that it forces magma up.

d)

plate boundaries are located in those areas

13.

Earthquakes are most likely to occur where

a)

the density cracks thin areas of Earth's crust

b)

heat causes the mantle to expand

c)

there are plate boundaries

d)

bubbles of magma rise to the surface

14.

Sea-floor spreading makes

a)

new oceanic crust

b)

oceanic trenches

c)

magma

d)

new volcanoes

15.

The continent move apart at a rate of

a)

feet/year

b)

meters/year

c)

millimeters/year

d)

centimeters/year

16.

The layer of rock that forms Earth's outer surface.

a)

inner core

b)

skin

c)

crust

d)

mantle

17.

The relatively thick part of the Earth's crust which forms the large land masses

a)

crust

b)

oceanic crust

c)

asthenosphere

d)

continental crust

18.

The transfer of heat by movement of a fluid

a)

conduction

b)

radiation

c)

convection

d)

thermal energy

19.

A layer the Earth that is made of liquid iron and nickel ; responsible for Earth's magnetic field

a)

crust

b)

mantle

c)

inner core

d)

outer core

20.

heat currents in the magma that move from the interior of the Earth to the surface and drive plate tectonics

a)

ocean currents

b)

convection currents

c)

ocean currents

d)

wind currents

21.

A dense ball of solid iron and nickel at the center of the Earth

a)

outer core

b)

mantle

c)

crust

d)

inner core

22.

How is Earth’s magnetic field similar to that of a magnet?

a)

It is hundreds of miles long.

b)

It is shaped like a horseshoe.

c)

It has North and South poles

d)

It is made in Earth’s core.

23.

What is our best evidence that Earth has a magnetic field?

a)

A compass needle lines up with it.

b)

Earth’s oceans all have currents.

c)

All things fall toward Earth’s center.

d)

Winds blow from east to west.

24.
What is the heat source for convection in the mantle?
a)
the Crust
b)
the Mantle
c)
the Core
25.
What is the cooling source for convection in the mantle?
a)
the Crust
b)
the Mantle
c)
the Core
26.
 Where do convection currents happen in the model we are studying?
a)
the Crust
b)
the Mantle
c)
the Core
27.
When molten  material is heated in the mantle it becomes
a)
more dense
b)
less dense 
28.
When molten  material is cooled in the mantle it becomes
a)
more dense
b)
less dense 
29.
When molten  material is heated in the mantle the molecules
a)
expand (spread out)
b)
condense (shrink together) 
c)
stay the same
30.
When molten  material is cooled in the mantle the molecules
a)
expand (spread out)
b)
condense (shrink together) 
c)
stay the same
31.
Molecules that are more dense than the surrounding particles will...
a)
rise up
b)
sink down
c)
stay put
32.
Molecules that are less dense than the surrounding particles will...
a)
rise up
b)
sink down
c)
stay put
33.

Convection currents occur due to...

a)

rotation of earth

b)

differences in temperature and density

c)

electrons moving

d)

gravitational pull

34.

Which of the following is one reason Earth's tectonic plates to move?

a)

energy from the Sun

b)

magnetic Pole Reversal

c)

convection currents in the mantle

d)

faults in Mountain Ranges

35.

Convection cycles move in the mantle. How does this affect the crust?

a)

crust has no motion

b)

crust moves in random directions

c)

crust moves in same direction convection cycle moves

36.

Name the type of heat transfer shown in the picture.

a)

convection

b)

conduction

c)

radiation