WorksheetsSeafloor Spreading
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
When looking at mid ocean ridges the oldest rocks are
a)
at the top of the ridges
b)
at the bottom of the ridges
c)
inside the mid ocean ridges
d)
farthest away from the mid ocean ridges
2.
Sea floor spreading
a)
creates new crust
b)
destroys old crust
c)
is a rapid process
d)
has no effect on the oceanic crust
3.
The zone where one plate slides under another is called the
a)
Convergent zone
b)
Subduction zone
c)
Transform zone
d)
Mantle zone
4.
What technology was used during WWII to detect enemy submarines and produce the first map of the seafloor?
a)
Sonar
b)
Radar
c)
GPS
5.
Undersea mountain range.
a)
Rift
b)
Mid-ocean ridge
c)
seafloor spreading
d)
Continental drift
6.
Theory that magma rises to surface at mid-ocean ridge & cools to form new seafloor
a)
Continental drift
b)
Plate tectonics
c)
Volcanoes
d)
Seafloor spreading
7.
Boundary between two plates moving toward each other
a)
Transform fault boundary
b)
Divergent boundary
c)
Convergent boundary
d)
Strike-slip fault
8.
Which of the following causes 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
9.
What are the two types of crust?
a)
continental and oceanic
b)
ocean and basin
c)
lower and upper
d)
thick and thin
10.
What is Pangaea?
a)
the name of a German scientist
b)
the name of the super-continent that existed millions of years ago
c)
another name for continental drift
d)
the name of an ancient fossil
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