WorksheetsPlate Tectonics OST Practice
Total questions: 15
Worksheet time: 15mins
Name
Class
Date
1.
Which process results in the formation of deep ocean trenches?
a)
erosion of ocean islands
b)
subduction of tectonic plates
c)
volcanic eruption of the sea floor
d)
movement of water by convection
2.
Which process forms mid-ocean ridges?
a)
Earthquakes create long fractures in oceanic crust.
b)
The weight of ocean floor sediments crumples oceanic crust.
c)
The oceanic crust separates and allows mantle material to surface.
d)
Plumes of thermal energy cause the oceanic crust to heat and swell.
3.
The Hawaiian Islands are volcanic islands located near the center of a large tectonic plate called the Pacific plate.
Which geologic feature is responsible for forming the Hawaiian Islands?
a)
hot spot
b)
transform fault
c)
mid-ocean ridge
d)
subduction zone
4.
In 1968, the Deep Sea Drilling Project began extracting sediment cores form the ocean floor. Analysis of these cores has since shown that the ocean basins are
very young compared to the accepted age of the Earth. No rocks older than 180 million years have been found. The cores further indicated that ocean sediments
are absent at the mid-ocean ridge and get thicker moving away from the ridge.
The evidence helped to confirm what aspect of the plate tectonic theory?
a)
sea-floor spreading
b)
paleomagnetism reversals
c)
existence of land bridges
d)
location of the lithosphere
5.
a)
Location 1
b)
Location 2
c)
Location 3
d)
Location 4
6.
a)
mantle
b)
hotspots
c)
ocean currents
d)
tectonic plate boundaries
7.
a)
Island W
b)
Island X
c)
Island Y
d)
Island Z
8.
a)
South America and Africa were once connected.
b)
Mesosaurus crossed land bridges with early humans.
c)
Adaptations resulted in identical species in different ecosystems.
d)
The reptile changed into a marine organism and swam the Atlantic Ocean.
9.
Geothermal energy sources that can produce steam are located where bodies of magma are relatively close to Earth’s surface.
At which regions would these steam-producing energy sources occur?
a)
regions with very hot climates
b)
regions within stable continents
c)
regions with recent volcanic activity
d)
regions at latitudes close to the equator
10.
How are tsunamis, earthquakes and tectonic plate movement related?
a)
Earthquakes cause plate movement, which causes tsunamis.
b)
Plate movement causes earthquakes, which cause tsunamis.
c)
Plate movement causes tsunamis, which cause earthquakes.
d)
Tsunamis cause earthquakes, which cause plate movement.
11.
a)
Hawaii
b)
Kahoolawe
c)
Kauai
d)
Maui
12.
Select three pieces of evidence from the diagram above that support your choice for the first island formed.
a)
distance from the hot spot
b)
direction of plate movement
c)
latitude and longitude of the island and the hot spot
d)
the depth of the hot spot
e)
size and shape of the island
13.
a)
Shilong
b)
Wellington
c)
Osaka
d)
Perth
e)
Sydney
14.
a)
A
b)
B
c)
C
d)
D
15.
How can scientists tell when the reversals of the magnetic field occurred?
a)
by measuring the thickness of the different bands of the oceanic crust.
b)
by measuring the distance between the mid-ocean ridge and the ocean floor band.
c)
by measuring the amounts of minerals that aligned to Earth’s magnetic field in the different bands
d)
by measuring the strength of Earth’s magnetic field recorded in the solidified magma of the oceanic crust
100 %
