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Plate Tectonics
Test Description: 1. The Earth has layers 2. Continents change position over time. 3. Plates move apart Chap.6
Instructions: Answer all questions to get your test result.
1) Which of the following best describes Earth's mantle?
A
the thickest layer of hot rock
B
the densest of Earth's layers
C
the home of all life on Earth
D
the thinnest and hottest layer
2) Tectonic plates make up Earth's
A
asthenosphere
B
lower mantle
C
inner core
D
lithosphere
3) Why did many scientists reject Wegener's continental drift hypothesis?
A
He could not explain how the continents moved.
B
The geology of continents did not support his hypothesis.
C
The climates of the continents have remained the same.
D
Fossil evidence showed that the continents were never joined.
4) What evidence from the sea floor shows that tectonic plates move?
A
Mid-Ocean ridges circle Eqarth like seams in a baseball
B
The sea floor is much older than any of the continents.
C
The sea floor is youngest near a mid-ocean ridge and older farther away.
D
The sea floor is thinner than continental crust.
5) A Mid-Ocean ridge forms where plates
A
scrape past each other
B
push together
C
subduct
D
move apart
6) Plate motion is caused partly by
A
convection currents
B
volcanic hot spots
C
magnetic reversals
D
continental drift
7) Which of the following is formed at the collision zone?
A
mountain range
B
deep ocean trench
C
continental rift valley
D
volcanic island chain
8) What happens when two oceanic plates meet?
A
The colder, denser plate sinks.
B
Both plates sink into the asthenosphere.
C
One plate slides past the other.
D
Both plates fold the rock between them.
9) Where is crust neither formed nor destroyed?
A
subduction zoned
B
continental rift valley
C
transform boundary
D
mid-ocean ridge
10) Earthquakes are MOST LIKELY to occur at the borders of
A
continents.
B
countries
C
lithospheric plates.
D
oceans
*select an answer for all questions
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