Practice Papaer - Continental Drift and Plate Tectonics

1. What describes that the Earth’s continents were drifting?
(1)
_______________
2. Who was the first person to talk about the Theory of Continental Drift publicly? (1)
A. Alfred Wegener
B. Arthur Wegener
C. Albert Einstein
3. What is the other name for Pangaea that Wegener called? (Pan meaning entire, Gaia
meaning earth) (1)
_________________
4. What is the difference between the Theory of Plate Tectonics and the Theory of
Continental Drift? (2)
A. Theory of Plate Tectonics describes the continents are moving, and the Theory of
Continental Drift describes the tectonic plates that are moving
B. Theory of Plate Tectonics describes the continents are not moving, and the
Theory of Continental Drift describes the tectonic plates that are moving
C. Theory of Plate Tectonics describes the tectonic plates are moving, and the
Theory of Continental Drift describes the continents that are moving
D. Theory of Plate Tectonics describes the continents are moving, and the Theory of
Continental Drift describes the tectonic plates that are not moving
5. Name the main seven tectonic plates on earth (7)
1. _______________________
2. _______________________
3. _______________________
4. _______________________
5. _______________________
6. _______________________
7. _______________________
6. What are tectonic plates? (3) And What do they move? (2)
Tectonic plates are _____________________________________________________
_____________________________________________________________________
Tectonic plates moves __________________________________________________
7. Is the earth only made up by seven tectonic plates? (1)
A. Yes
B. No (There are eight other smaller secondary plates and many other microplates)
8. Why does the sizes and positions of the plates change over time? (3)
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
9. According to the concept of seafloor spreading, what is divergence and
convergence? (2)
Divergence … ; Convergence ….
I. Occurs when oceanic plates are moving away from each other.
II. Occurs when oceanic plates are moving towards from each other.
III. Occurs when Volcanic eruptions and earthquakes happens.
A. I; III
B. II; III
C. I; II
D. II; I
10. Please identify what will happen when divergence of seafloor spreading occurs. (1)
I. Magma rise and cool, forming a new seafloor.
II. Material push upwards (obduction) forming mountains.
III. Material push downwards (subduction) into the mantle, balanced by the new
formation of new (oceanic) crust by seafloor spreading.
A. Only II
B. Only I
C. II and III
D. I, II and III.
11. Please identify what will happen when convergence of seafloor spreading occurs. (1)
I. Magma rise and cool, forming a new seafloor.
II. Material push upwards (obduction) forming mountains.
III. Material push downwards (subduction) into the mantle, balanced by the new
formation of new (oceanic) crust by seafloor spreading.
A. Only II
B. Only I
C. II and III
D. I, II and III.
12. What forms when two oceanic plates diverge? Name one example. (2)
___________________________________________________________________
13. What forms when two continental plates converge on land ? Name one example. (2)
___________________________________________________________________
14. What happens when an oceanic plate converges with a continental plate?
Please identify the correct sequence: (2) Please choose from the next page.
I. The oceanic plate may go deep enough under the continental plate and into
the mantle that it melts and forms magma.
II. The oceanic plate will move under the continental plate (Subduction)
because its denser.
III. Magma under high pressure sometimes comes through volcanic vents in the
form of flowing lava, forming a volcanic cone.
IV. Increased pressure from beneath the Earth can build up and cause the
magma to seep up through weak spots in the crust.
A. I, II, III, IV
B. II, I, IV, III
C. I, III, II, IV
D. IV, II, I, III

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1. What describes that the Earth’s continents were drifting?

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