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Earth's Interior: Science 8th Grade

Total questions: 79

Worksheet time: 46mins

Name
Class
Date
1.
What is the inner most layer of Earth?
a)
core
b)
outer core
c)
inner core
d)
asthenosphere
2.
Which layer of earth is molten?
a)
inner core
b)
outer core
c)
crust
d)
lithosphere
3.
Which layer of Earth is solid and why?
a)
The inner core is solid because of movement of the outer core.
b)
The inner core is solid because of the freezing temperatures.
c)
The inner core is solid because of the extreme pressure from the other layers.
d)
The outer core is solid because of the extreme pressure from the other layers.
4.
Which layers make up the mantle?
a)
crust, inner core, outer core
b)
mesosphere, asthenosphere, part of lithosphere
c)
bottom part of the mantle
d)
crust only
5.
Which two layers, one right below the other, causes movement that can create an earthquake?
a)
crust and core
b)
mantle and core
c)
lithosphere and core
d)
lithosphere and asthenosphere
6.
Which layer of Earth has a temperature of up to 130000 F and is hotter than the sun's surface?
a)
crust 
b)
mantle
c)
outer core
d)
inner core
7.
Which of Earth's layers is made of SOLID iron and nickel?
a)
crust 
b)
mantle
c)
outer core
d)
inner core
8.
Which layer of the Earth is the thickest at about 1802 miles (2900 km) and makes up about 84% of Earth's total volume?
a)
crust
b)
mantle
c)
outer core
d)
inner core
9.

Which area of the Earth is least dense ?

a)

Outer core

b)

inner core

c)

mantle

d)

crust

10.

Why is the core more dense than the mantle or crust?

a)

It has more aluminum

b)

it has more iron

c)

it has more tin

d)

it has more basalt

11.

A tectonic plate division of the lithosphere that includes the continental crust of Greenland, North America, Siberia, and the surrounding oceanic crust is called the

a)

Northern Plate

b)

Northern Hemisphere

c)

Upper Plate

d)

North American Plate

12.

A tectonic plate division of the lithosphere, including most of the landmasses of Europe and Asia is called

a)

Plate of Europe and Asia

b)

European Plate

c)

AsiaEuro Plate

d)

Eurasian Plate

13.

A tectonic plate division of the lithosphere that includes the continental crust of Africa and the surrounding oceanic crust is known as the

a)

Somali Plate

b)

Euroafrican Plate

c)

African Plate

d)

South American Plate

14.

A tectonic plate division of the lithosphere that includes the continental crust of South America and the oceanic crust extending to the Mid-Atlantic Ridge is called the

a)

South American Plate

b)

Columbian Plate

c)

Indo-Australian Plate

d)

North American Plate

15.

A tectonic plate division of the lithosphere that includes the continental crust of India and Australia and the surrounding oceanic crust is known as the

a)

Sub-Australian Plate

b)

Indo-African Plate

c)

Indo-Australian Plate

d)

South American Plate

16.

A tectonic plate division of the lithosphere that includes the continental crust of Antarctica and the surrounding oceanic crust

a)

Sub-Arctic Plate

b)

Alaskan Plate

c)

Antarctic Plate

d)

North Pole Plate

17.

A tectonic plate division of the lithosphere that is composed entirely of oceanic crust and lies beneath the Pacific Ocean is called the

a)

Atlantic Plate

b)

Pacific Plate

c)

Gulf Coast Plate

d)

Oceanic Plate

18.

The place where two different plates have contact is called

a)

subduction

b)

trench

c)

fault

d)

plate boundary

19.

This occurs when two tectonic plates move toward each other and collide

a)

tsunami

b)

convergent boundary

c)

volcano

d)

subduction

20.

This occurs when one plate is denser than another and is forced below as the two plates converge at their boundary. Oceanic trenches are formed this way by ocean plates.

a)

convergent boundary

b)

ocean trench

c)

subduction

d)

divergent boundary

21.

A major geological event that occurs when a dense plate subducts below a less dense plate and molten rock spews out from the mantle to the surface of Earth

a)

mountain building

b)

volcanic eruption

c)

ocean trench

d)

earthquake

22.

A major geological event that occurs when continental plates of equal density converge, resulting in mountain chains

a)

mountain building

b)

earthquakes

c)

fault lines

d)

spreading ridges

23.

This occurs when two tectonic plates move away from each other

a)

San Andreas Fault

b)

spreading ridges

c)

convergent boundary

d)

divergent boundary

24.

This occurs when two tectonic plates slide past each other (the San Andreas Fault in California is a famous example)

a)

Pacific Plate

b)

convergent boundary

c)

fault line

d)

transform boundary

25.

A major geological event that occurs when plates shift suddenly and release stored energy; frequent occurrences along all types of plate boundaries

a)

earthquake

b)

tidal wave

c)

volcanic eruption

d)

meteor

26.
The supercontinent in the continental drift hypothesis was called ____.
a)
Pantry
b)
Pangaea
c)
Wegenerland
d)
Eurasia
27.
What was the main reason Wegener’s continental drift hypothesis was rejected?
a)
He did not have any evidence
b)
His proposed mechanisms were physically impossible
c)
He did not propose any mechanisms.
28.
Which of the following was NOT used in support of the continental drift hypothesis?
a)
matching fossils
b)
Ancient climates
c)
paleomagnetism
d)
Matching rocks
29.
What kind of plate boundary occurs where two plates grind past each other without destroying or producing
lithosphere?
a)
convergent 
b)
transform
c)
divergent
30.
A divergent boundary at two oceanic plates can result in a ____.
a)
volcanic island arc
b)
continental volcanic arc
c)
earthquake
d)
ocean ridges (seafloor spreading)
31.
According to the theory of plate tectonics, ________.
a)
the asthenosphere is divided into plates
b)
the lithosphere is divided into plates
32.
What type of boundary occurs where two plates move together?
a)
convergent
b)
transform
c)
divergent
33.
New ocean crust is formed at ______.
a)
convergent boundaries
b)
divergent boundaries
c)
transform fault
34.
What results when divergence occurs between two oceanic plates?
a)
a subduction zone
b)
seafloor spreading
c)
an ocean trench
d)
a volcanic island arc
35.
What forms when one oceanic plate is forced beneath another plate?
a)
subduction zone
b)
an ocean ridge
c)
a rift valley
d)
an ocean basin
36.
Oceanic lithosphere is destroyed at ______
a)
transform fault boundaries
b)
divergent boundaries
c)
ocean ridges
d)
convergent boundaries
37.
What is the weaker, hotter zone beneath the lithosphere that allows for motion of Earth's rigid outer shell?
a)
crust
b)
outer core
c)
astenosphere
d)
inner core
38.
What is the largest tectonic plate?
a)
North American
b)
Pacific
c)
Antarctic
d)
Eurasian
39.
What is the largest tectonic plate?
a)
North American
b)
Pacific
c)
Antarctic
d)
Eurasian
40.

Who developed the tectonics theory?

a)

Afred Wegener

b)

Alfred Wegener

c)

Allfred Wegener

d)

Alfred Wegner

41.

how do we know about the interior of earth?

a)

moving plates

b)

we can go that deep and see it for ourselves

c)

seismic waves

d)

Alfred Wegener told us

42.

how do seismic waves tell us about earth's interior?

a)

A wave's speed changes as the wave passes through different materials.

b)

They tell us nothing

c)

This speed change results in the wave changing its direction of travel.

d)

They move the earth in different directions so we know how earth's interior is because the layers move individually

43.

another name for longitudinal waves

a)

compression waves

b)

transverse waves

44.

what is the lithosphere?

a)

the rigid outermost shell of a rocky planet

b)

is a liquid

c)

it is under the crust

d)

contains the crust and upper mantle

45.

which are the 2 types of crust/lithosphere?

a)

oceanic

b)

continental

c)

compression

d)

convection

46.

Oceanic is...

a)

composed of basalt

b)

composed of granite

c)

light color

d)

dark color

e)

fine texture

47.

Continental is...

a)

light color

b)

dark color

c)

composed of granite

d)

coarse texture

e)

composed of basalt

48.

the thin outer layer of earth composed of solid rock

a)

crust

b)

core

c)

mantle

49.

the crust...

a)

includes the ocean floor

b)

may be 3-43 miles thick

c)

is thinner under the ocean

d)

is thicker under continents

e)

composed of solid rock

50.

the mantle is...

a)

layer under the crust

b)

layer above the crust

c)

about 1800 miles thick

d)

between 3-43 miles thick

e)

composed of hot, solid rock

51.

asthenosphere is...

a)

the upper mantle

b)

semi-molten layer of the earth below the lithosphere

c)

less rigid, capable of blending, soft

d)

rock is near melting point so it is like slush

e)

a solid

52.

the lower mantle is...

a)

the lithosphere

b)

the asthenosphere

c)

a liquid

d)

a solid

e)

something that extends to the core

53.

the core is...

a)

composed mostly of nickel and iron

b)

composed mostly of basalt and granite

54.

the inner core is...

a)

dense

b)

solid

c)

liquid

d)

a ball of metal

55.

the inner core is...

a)

composed of molten metal

b)

liquid

c)

a solid ball of metal

56.

is the inner or outer core a liquid?

a)

inner

b)

outer

57.

heat traveling through solid objects

a)

conduction

b)

convection

c)

radiation

58.

heat traveling through a liquid/gas

a)

conduction

b)

convection

c)

radiation

59.

heat traveling through empty space

a)

conduction

b)

convection

c)

radiation

60.

Continental Drift Theory

a)

states that the plates actually float on the slush of the asthenosphere

b)

states that the plates actually float on the slush of the lithosphere

61.

why do the plates float according to the theory?

a)

the uneven distribution of heat caused by conduction currents

b)

the uneven distribution of heat caused by convection currents

c)

the uneven distribution of heat caused by radiation currents

62.

how are convection currents produced?

a)

hot materials within the earth rise to the surface, and cool materials sink where they are heated

b)

cool materials within the earth rise to the surface, and hot materials sink where they are cooled

63.

the source of the heat from convection currents is...

a)

radioactive decay

b)

kinetic energy from friction

c)

pressure from interior materials

64.

Major earth plates

a)

North & South American

b)

Antarctic & Pacafic

c)

Australian-Indian

d)

African & Eurasia

e)

European

65.

how many major earth plates are/were there?

a)

6

b)

7

c)

8

d)

9

66.

The name of the single landmass that broke apart 200 million years ago and gave rise to today's continents; the supercontinent the plates once formed

a)

Pangaea

b)

Laurasia

c)

Gondwana

67.

What happened 200 million years ago?

a)

Pangaea split in 2: Laurasia and Gondwana

b)

Pangaea split in 2: Laurnasia and Gwondola

c)

Pangaea split in 2: Iaurasia and Gondwanda

d)

Pangaea split in 2: Laurasia and Gwondola

68.

What happened 65 million years ago?

a)

South America splits from Africa

b)

Madagascar splits from Africa

c)

India splits from Africa

d)

Madagascar heads for Australia

e)

India heads for Asia

69.

What is earth like today?

a)

India is connected to Asia

b)

Greenland has split from Eurasia

c)

Australia split from Antarctica

d)

Hawaii is moving towards Japan at 4in/year

e)

North America is moving away from Europe at 1in/year

70.

Proof of Continental Drift Theory

a)

Rocks of the same age and type are found on matching borders

b)

Jigsaw puzzle fit of the continents

c)

Identical fossil remains of land animals are found on different continents including Antarctica

71.

Mid Oceanic Range

a)

large Mountain range with a rift; magma as lava rises through this rift and hardens, forming new crust

b)

plates spread as this new crust is formed; oldest rocks and fossils are further from the ridge while newer rocks are closer to the ridge

c)

trenches are formed where the seafloor goes under the continental crust

d)

areas of earthquake and volcanic activity

72.

boundaries

a)

areas where plates meet

b)

areas where the core meets the crust

c)

areas where the coremeets the mantle

d)

areas where the mantle meets the crust

73.

the area where a heavier ocean plate bends downward under the lighter continental plate; trenches, high mountains, volcanoes, and areas of earthquake activity are found around this

a)

subduction zone

b)

mid ocean range

c)

crust

d)

radiation

74.

convergent boundary geographic features

a)

the rocks and sediment are squeezed together

b)

the rocks and sediment are pushed apart

c)

high mountain ranges like the Himalayas are formed

75.

2 plates come together at this boundary

a)

convergent boundary

b)

divergent boundary

c)

subduction zone

d)

transformation boundary

76.

2 plates form other tectonics at this boundary

a)

convergent boundary

b)

divergent boundary

c)

subduction zone

d)

transformation boundary

77.

divergent boundary geographic features

a)

a fracture in the crust results and the magma pushes up

b)

as the magma cools, new crust is formed

c)

high mountain ranges like the Himalayas are formed

d)

the fractured crust is pushed down, forming a rift valley like in Africa

78.

2 plates slide past each other at this boundary

a)

convergent boundary

b)

divergent boundary

c)

subduction zone

d)

transformation boundary

79.

transformation boundary geographic features

a)

the San Andreas Fault is an example where the Pacific and North American plates are sliding past each other

b)

the rocks and sediment are squeezed together

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