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First Semester 8th Grade Science

Total questions: 40

Worksheet time: 25mins

Name
Class
Date
1.

Most geologists think that the movement of Earth’s plates is caused by _______

a)

convection.

b)

continental drift.

c)

subduction.

d)

conduction.

2.

The crust or bedrock is

a)

Layer of molten metal.

b)

Outermost layer of the Earth.

c)

Made up of the lithosphere and asthenosphere.

d)

Innermost layer of solid metal.

3.

Breaks in the crust called __________ form where plates meet.

a)

mountains

b)

rift valleys

c)

faults

d)

trenches

4.

A __________ forms where plates diverge on land.

a)

rift valley

b)

mid-ocean ridge

c)

mountain

d)

trench

5.

Which theory describes the motion of the force driving Earth's Plates?

a)

continental drift

b)

plate tectonics

c)

first law of motion

d)

third law of motion

6.

The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is known as _______

a)

convection.

b)

continental drift.

c)

subduction.

d)

conduction.

7.

Below is a picture of sea-floor spreading. How are the ocean crusts moving?

a)

Converging

b)

Diverging

c)

Sliding

d)

No movement

8.
According to the law of superposition, the oldest fossils are found 
a)
At the top of the rock layers
b)
Near the bottom of the rock layers
c)
In the middle of the rock layers
d)
Somewhat near the surface
9.
According to the law of superposition, which layer is the youngest?
a)
A
b)
B
c)
C
10.
Which animal is the youngest in site 1?
a)
bird
b)
ammonite 
c)
shell
11.
This rock was formed when molten rock cooled into a solid. What type of rock is it?
a)
Igneous Rock
b)
Metamorphic Rock
c)
Sedimentary Rock
12.
What are the 3 major types of rocks?
a)
Igneous, Metamorphic, Sedimentary
b)
Metamorphic, Igneous, Cementation
c)
Brown, Red, Gray
d)
Streak, Hardness, Breakage
13.
The process when rocks break into smaller pieces due to exposure to natural elements is called
a)
erosion
b)
weathering
c)
sediments
14.

Any rock that forms from another rock as a result of changes in heat or pressure (or both) is a:

a)

chemical rock

b)

igneous rock

c)

sedimentary rock

d)

metamorphic rock

15.

What type of rock might contain evidence of past life?

a)

Sedimentary Rock

b)

Igneous Rock

c)

Metamorphic Rock

16.

Which type of rock was MOST LIKELY formed by the Tennessee River over the last 100 million years?

a)

Igneous

b)

Sedimentary

c)

Mountainous

d)

Metamorphic

17.

The draining away of water from the surface of an area of land.

a)

weathering

b)

transpiration

c)

run-off

d)

precipitation

18.

This map shows tornado activity in the United States between 1950 and 1998. Based on the data provided by this map, which of the following cities would be most likely to experience a tornado with a rating of F3 or greater in the next year?

a)

Phoenix, Arizona

b)

Topeka, Kansas

c)

Orlando, Florida

d)

Columbia, South Carolina

19.

Of the following natural hazards we've studied, which is the hardest to predict?

a)
Tsunamis
b)
Volcanoes
c)
Tropical Cyclones
d)
Earthquakes
20.

Which Natural Disaster caused this?

a)

Flood

b)

Earthquake

c)

Volcanic Eruption

21.

Which picture better relates to "Hurricane"?

a)
b)
c)
d)
22.

Tsunamis CAN BE caused by (choose 3) ____

a)

Underwater Volcanoes

b)

Earthquakes

c)

Landslides

d)

High Winds

23.
When a lot of loose dirt and rocks move rapidly, we call it 
a)
a landslide
b)
a tsunami
c)
an earthquake
d)
a flood
24.
What happens during a rainstorm when the ground can't soak up any more water?
a)
a tsunami
b)
an earthquake
c)

flood from a river

d)

a flash flood

25.

What is the driving force behind the movement of the plates?

a)

b)

c)

d)

26.

Match the following

a)
1.

divergent

b)
2.

convergent

c)
3.

transform

27.

What types of landforms are formed at convergent boundaries?

PICK TWO

a)

volcanoes

b)

new crust

c)

Trenches

d)

rift valley

28.

What is the WHOLE AREA called where the oceanic crust goes beneath the continental crust?

a)

subtraction zone

b)

section zone

c)

secondary zone

d)

subduction zone

29.

Find the Nazca and the South American Plate. This is an example of two plates converging. The denser oceanic plate (Nazca) moves under the continental plate (South American Plate)and creates subduction. What features are likely found here?

a)

Rift Valleys

b)

Volcanoes

c)

Folded Mountains

d)

Ocean Basins

30.

The Indian Plate (far right of plate picture) converges with the Eurasian Plate. When two continental plates converge, what crustal feature is expected to form?

a)

Rift Valley

b)

Volcanoe

c)

Folded Mountain

d)

Ocean Basin

31.

A picture of sea-floor spreading is shown. How are the oceanic crust moving?

a)

Converging

b)

Diverging

c)

Sliding

d)

No movement

32.

The San Andreas Fault in California is known as an active earthquate area. What type of bounary is it?

a)

Convergent

b)

Divergent

c)

Transform

d)

Sea Floor Spreading

33.

When two oceanic plate boundaries converge, what crustal feature forms? (See photo

a)

Plate Tectonics

b)

Sea Floor Spreading

c)

Folded Mountains

d)

Vocanic Island Arc

34.

Match each diagram with the correct boundary type.

a)
1.

Convergent Bountary

b)
2.

Divergent Boundary

c)
3.

Transform Boundary

d)
4.

Subduction

35.

Most geologists think that the movement of Earth’s plates is caused by (a)  

Choose from the below words
convection.
continental drift.
subduction.
conduction.
36.

Which of the following are potential effects of a natural disasters (check all that apply)?

a)

spread of disease due to reduced standards of sanitation

b)

disruption of communication networks

c)

disruption of government and its services

d)

loss of jobs and businesses

37.
Why is it beneficial to be able to predict when and where natural hazards will occur? 
a)
Communities can be notified to evacuate 
b)
So that we can stop them from happening again 
c)
So that scientists know where to go in order to study them 
d)
So that we can harness their power for renewable energy
38.

Coastal Vegetation, such as swamp or marshlands, can help slow tsunami waves and storm surge from hurricanes.

a)

True

b)

False

39.
What is Magma when it reaches the surface of Earth?
a)
Lava
b)
Mafic Magma
c)
Felsic Magma
d)
None of these
40.

Volcanic belts form along _____.

a)

the boundaries of Earth’s plates

b)

North American mountain ranges

c)

islands in the Pacific Ocean

d)

the middle of Earth’s plates

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