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Plate Tectonics
Test Description: Semester 1
Instructions: Answer all questions to get your test result.
1) What causes convection currents in the asthenosphere that causes the plates to move?
A
Differences in rock types (sedimentary, metamorphic)
B
Differences in density (cold sinking rock; hot rising rock)
C
Differences in composition (types of minerals that make up rocks)
D
Differences in pressure (increasing as you get deeper in the Earth)
2) Which layer of the Earth is the least dense and is the thinnest?
A
Inner core
B
Outer Core
C
Lithosphere
D
Crust
3) What type of boundary formed the mid-ocean ridge?
A
Convergent
B
Divergent
C
Transform
D
Subduction
4) Which layer of the Earth is the hottest and is composed of solid iron and nickel?
A
Inner Core
B
Outer Core
C
Crust
D
Asthenosphere
5) What is the process that creates new ocean crust at the divergent boundary?
A
continental drift
B
subduction zone
C
sea-floor shrinking
D
sea-floor spreading
6) What idea states that the continents were once joined together and have spread apart over millions of year?
A
Continental drift theory
B
Continental convergent theory
C
Continental separation theory
D
Sea-floor spreading theory
7) Which was NOT evidence used to support continental drift theory?
A
lithification of sediments
B
fossils
C
changing climates in some places
D
shapes of continents
8) What happens to temperature, density, and pressure and you go from the crust to the core?
A
temperature increases, the others decrease
B
all decrease
C
density increases, the others decrease
D
all increase
9) When you cook vegetable soup, you might notice the veggies swirling in a circle in the boiling liquid. What is this a model of?
A
Stratification in layers
B
Continental drift
C
Convection currents in the mantle
D
Convection currents in the inner core
10) If you find fossils of sea organisms on a mountain, what can you conclude?
A
The wind deposited the fossils on the mountain
B
The sea organisms once lived on land
C
The mountain was once part of the ocean floor
D
The mountain was once in the ocean water
*select an answer for all questions
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