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WorksheetsSea Floor Structure
Total questions: 26
Worksheet time: 12mins
Name
Class
Date
1.
Why does the Hawaiian island change directions abruptly? Because...
a)
a giant volcano exploded
b)
the Earth's core reversed directions
c)
a huge earthquake
d)
Mr. C Dabbed on 'em
2.
Where is the deepest place in the ocean
a)
Middle of Pacific Ocean
b)
middle of Atlantic Ocean
c)
Marianas Trench
d)
Macaroni Trench
3.
A submarine canyon is created by
a)
subduction
b)
river being covered by the sea
c)
a submarine
d)
by some-marine
4.
This is a image of a ?
a)
Guyot
b)
Coral Reef
c)
Atoll
d)
Circle
5.
which margin would have the most earthquakes?
a)
passive
b)
active
c)
wactive
6.
The plates are made up of which layer(s)?
a)
Upper and lower mantle
b)
Just the upper mantle
c)
Lithosphere
d)
Lithosphere and Asthenosphere
7.
When you are in the water at the beach, you are standing on oceanic crust.
a)
true
b)
false
8.
The Hawaiian island chain is created by a giant blast of energy from the Earth's core.
a)
true
b)
false
9.
Point A is the...
a)
The Snap
b)
The Crackle
c)
The Pop
d)
The Break
10.
Point B is the...
a)
Foot
b)
Hand
c)
Rise
d)
Fall
11.
An underwater volcano is called what?
a)
Seamount
b)
Ocean Volcano
c)
Exploding Earth
d)
Seacano
12.
The sharp drop off the continental shelf is called what?
a)
Continental Rise
b)
Continental Slope
c)
Trench
d)
Seamount
13.
A wide flat area that takes up about 40% of the ocean floor.
a)
Continental Shelf
b)
Mid-Ocean Ridge
c)
Trench
d)
Abyssal Plains
14.
What causes the crust to move?
a)
convection
b)
conduction
c)
tension
d)
radiation
15.
Which type of crust is more dense and thinner?
a)
Continental
b)
Asthenosphere
c)
Oceanic
d)
Byers
16.
Which of the following supports the theory of seafloor spreading?
a)
Correlation of rock layers
b)
Crustal Age
c)
Magnetic Reversal
d)
Continuous Mountain Chains
17.
What is the only liquid layer of the Earth?
a)
Crust
b)
Mantle
c)
Outer Core
d)
Inner Core
18.
The OLDEST seafloor is located?
a)
Closest to the mid-ocean ridge
b)
Farthest from the mid-ocean ridge
19.
_____________ is a single large landmass created when all the continents were joined together.
a)
Plate Tectonics
b)
Continental Drift
c)
Pangaea
d)
The Theory of Evolution
20.
What increases as you go deeper into the Earth?
a)
volume & density
b)
temperature & pressure
c)
composition & temperature
d)
space & time
21.
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
22.
When an oceanic plate and a continental plate collide, which one will subduct?
a)
oceanic
b)
continental
c)
neither
d)
both
23.
Two tectonic plates collide at a ___ plate boundary.
a)
convergent
b)
divergent
c)
transform
d)
transformer
24.
What are the two types of crust?
a)
continental and oceanic
b)
ocean and basin
c)
lower and upper
d)
thick and thin
25.
Volcanoes never form along subduction zones.
a)
True
b)
False
26.
Continental crust is more dense than oceanic crust.
a)
True
b)
False
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