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WorksheetsQUIZ 4
Total questions: 20
Worksheet time: 15mins
When two tectonic plates collide, the oceanic crust usually subducts beneath the continental crust because it is_________.
a. denser than continental crust
b. less dense than continental crust
c. thicker than continental crust
d. thinner than continental crust
If you will visit a place in the Pacific known to be along converging plates, which of these should you not expect to see?
a. active volcanoes
b. mountain ranges
c. rift valleys
d. volcanic islands
You are an oceanographer and want to map the ocean floor on the east coast of the Philippines. As you do your study, you noticed that there is a portion of the ocean floor which is relatively much deeper than the rest. What most likely is that deeper part?
a. linear sea
b. oceanic ridge
c. rift valley
d. trench
What do you expect to find at a mid-ocean ridge?
a. relatively young rocks
b. reverse fault
c. thick accumulation of sediments
d. very ancient rocks
Crustal Plate A is moving away from Crustal Plate B. What is the expected average rate of change in position between A and B?
a. a few centimeters per year
b. a few meters per month
c. a few millimeters per century
d. a few millimeters per day
Which plate boundary is formed between the Philippine Plate and the Eurasian Plate?
a. convergent
b. divergent
c. reverse fault
d. transform fault
Which of these is FALSE about crustal plates:
a. have the same thickness everywhere
b. include the crust and upper mantle
c. thickest in the mountain region
d. vary in thickness
In 1912, Alfred Wegener proposed a theory that the Earth is once a single landmass. What is the name of the Mesozoic supercontinent that consisted of all of the present continents?
a. Eurasia
b. Laurasia
c. Pangaea
d. Gondwanaland
Who were the two scientists who proposed the theory of seafloor spreading in the early 1960s?
a. Charles Darwin and James Hutton
b. Harry Hess and Robert Dietz
c. John Butler and Arthur Smite
d. F. Vine and D. Mathews
Which of the following diagrams best illustrates the convection occurring in the mantle?
Which of the following increases with distance from a mid-ocean ridge?
a. the age of oceanic lithosphere
b. the thickness of the lithosphere
c. the depth to the sea floor
d. all of the above
Which of the following can you infer from the continuous movement of the lithospheric plates over the asthenosphere?
a. All the continents will cease to exist.
b. All the volcanoes in the Philippines will become inactive
c. The continents will not be located in the same place as they are now.
d. The islands of the Philippines will become scattered all over the world
Why does the oceanic crust sink beneath the continental crust at the subduction zone?
a. The oceanic crust has a greater density.
b. The oceanic crust is pulled downward by Earth’s magnetic field.
c. The oceanic crust is pushed from the ridge.
d. The continental crust has a denser composition.
If all the inner layers of the Earth are firm solid, what could have happened to Pangaea?
a. It remained as a supercontinent.
b. It would have become as it is today.
c. It would have slowly disappeared in the ocean.
d. It would have stretched and covered the whole world.
The lithospheric plates are believed to be moving slowly. What is the driving force that facilitates this movement?
a. gravitational force of the moon
b. magnetic force at the poles
c. convection current in the mantle
d. the force of the atmosphere
Divergent plate boundary is also known as______.
Destructive plate
Constructive plate
Conservative plate
Defensive plate
Convergent plate boundary is also known as______.
Conservative plate
Destructive plate
Constructive plate
Quantitative plate
Transform fault plate boundary is also known as______.
Destructive plate
Conservative plate
Destructive plate
Qualitative plate
Which among the following landforms is created when two continental plates of similar density collide with each other?
A. Island
B. Mountain
C. Trench
D. Volcano
Study the illustration on the right, what mechanism of plate movement happened in number 3?
A. slab pull
B. transform
C. ridge push
D. convection current
