Convection Currents and their Effects
Assessment
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Lauren Sabath
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Science
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8th Grade
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5 plays
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Medium
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10 questions
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1.
Multiple Choice
What are convection currents?
Vertical (up and down) movements of solid rock in the Earth's mantle caused by heat transfer.
Horizontal (right and left) movements of molten rock in the Earth's core caused by gravitational forces.
Circular movements of molten rock in the Earth's mantle caused by heat transfer.
Circular movements of molten rock in the Earth's crust caused by tectonic plates.
2.
Multiple Choice
Where does the heat come from needed to create convection currents?
Heat is generated from chemical reactions in the mantle
Heat is generated from the inner core
Heat is generated from the outer core
Heat is generated from the friction of solid and liquid rocks in the mantle
3.
Multiple Choice
How do convection currents transfer heat in the asthenosphere?
The sun heats up the magma through radiation which causes it to rise and sink.
Hot magma rises and cooler magma sinks due to differences in density.
The magma touches the inner core of Earth through conduction which heats it up and causes differences in density.
Cold magma rises and hot magma sinks due to differences in density.
4.
Multiple Choice
Where is the MORE dense magma/liquid material found in asthenosphere?
Towards the bottom of the layer
Towards the top of the layer
All of the liquid is the same density no matter what
We do not have enough information on this process to know
5.
Multiple Choice
Where is the LESS dense magma/liquid material found in asthenosphere?
Towards the bottom of the layer
Towards the top of the layer
All of the liquid is the same density no matter what
We do not have enough information on this process to know
6.
Multiple Choice
What is the role of gravity in convection?
Gravity has no role in convection.
Gravity only affects solids in convection.
Gravity causes convection to stop.
Gravity causes fluids to circulate in convection.
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