WorksheetsSea-Floor Spreading and Plate Tectonics
Total questions: 27
Worksheet time: 14mins
Name
Class
Date
1.
True or False: The 7 continents were once a united landmass.
a)
True
b)
False
2.
Boundary where two plates move away from each other.
a)
Transform Boundary
b)
Divergent Boundary
c)
Convergent Boundary
d)
Physical Boundary
3.
The theory that Earth's lithosphere are moving constantly by convection currents from the Mantle.
a)
Plate Tectonics
b)
Tectonic Plates
4.
The leading edge of the older crust that is subducted pulls the rest of the plate down with it.
a)
Strike-slip fault
b)
Island Arc
c)
Folded Mountains
d)
Slab Pull
5.
What does a convergent Ocean-Ocean Plate Collision makes?
a)
Volcanic Mountains
b)
Volcanic Islands/ Island Arc
c)
Folded Mountains
d)
Rift Valley
6.
True or False: Continental Crust is less dense than Oceanic Crust
a)
True
b)
False
7.
Continental crust is mainly made of the rock....
a)
Nickel
b)
Basalt
c)
Mantle
d)
Granite
8.
Earth's lithosphere is broken into separate sections called.....
a)
plates
b)
faults
c)
trenches
d)
rifts
9.
Mountains formed when two continental plates collide
a)
Regular Mountains
b)
Folded Mountains
c)
Volcanic Mountains
d)
Continental Mountains
10.
Why did scientists rejected Wegener's theory? He couldn't.....
a)
Explain why continental crust was denser than oceanic crust.
b)
Describe the climate of Pangaea
c)
Explain what force pushes or pulls continents
d)
Describe how seeds moved from Africa to South America
11.
The process in which molten material adds new oceanic crust to the ocean floor.
a)
Mid-Ocean Ridge
b)
Plate Tectonics
c)
Tectonic Plates
d)
Sea-Floor Spreading
12.
Who studies the forces that make and shape the planet?
a)
Biologists
b)
Geologists
c)
Chemists
d)
Physicists
13.
A process that involves lithospheric plate sinking into the mantle.
a)
Rift Valley
b)
Subduction
c)
Mid-Ocean Ridge
d)
Deep-Ocean Ridges
14.
Why is the Pacific Ocean getting smaller while the Atlantic Ocean is getting larger?
a)
The Pacific Ocean is losing water
b)
The Atlantic Ocean is gaining water
c)
The Pacific Ocean has too many trenches
d)
The Atlantic Ocean has too many trenches
15.
True Or False: A rift valley forms along a divergent boundary on land.
a)
True
b)
False
16.
True Or False: Density is a measure of how much mass is in a volume of a substance.
a)
True
b)
False
17.
Name the island arcs.
a)
Japan
b)
Philippines
c)
Caribbean Islands
d)
All of the Above
18.
What are the three pieces of evidence for sea-floor spreading?
a)
Puzzle-Like Shapes, Magnetic Stripes, Molten Material
b)
Molten Material, Magnetic Stripes, Drilling Samples
c)
Drilling Samples and Molten Matierlal
d)
Molten Material, Movement, Shifting of Plates
19.
What are 4 evidence for the theory of continental drift.
a)
There are only 3, Fossils, Mountain Ranges, Climate Conditions
b)
Fossils, Mountain Ranges, Magnetic Poles, and Movement of Plates
c)
Climate Conditions and Movement of Plates
d)
Fossils, Mountain Ranges, Climate Conditions, Puzzle-Like Continents
20.
What part of the Mantle can bend like plastic?
a)
Lithosphere
b)
Athensphere
c)
Mesoshpere
d)
Outer Mantle
21.
What sphere has to deal with frozen water?
a)
Hydrosphere
b)
Geosphere
c)
Cryosphere
d)
Biosphere
22.
Is the Earth System an Open or Closed System
a)
Open System
b)
Closed System
c)
Earth System
d)
None of the Above
23.
Formed when two plates move apart at a divergent boundary.
a)
Strike-Slip Fault
b)
Rift Valley
c)
Island Arc
d)
Mid-Ocean Ridge
24.
The transfer of heat by movement of a fluid.
a)
Conduction
b)
Radiation
c)
Cycle
d)
Convection
25.
Where old ocean crust gets subducted and melts into the mantle.
a)
Rift Valley
b)
Mid-Ocean Ridge
c)
Trenches
d)
Mountains
26.
In a transform boundary, how do the two plates move?
a)
Vertically
b)
Horizontally
c)
Across
d)
Through
27.
In convection, the hotter, less denser fluid......
a)
rise to the top
b)
stays where it is
c)
sinks to the bottom
d)
stays on top
100 %
