The heat energy from convection currents in magma also drives the rock cycle. Convection and movement of the plates causes rock to move between Earth’s surface and interior. It provides the heat that changes rocks inside Earth to form metamorphic rocks. Igneous rocks form when magma cools and solidifies. The older rocks that are broken down and converted to sedimentary rocks might come from igneous and metamorphic rocks or even older sedimentary rocks. TRUE or FALSE: Without convection currents, there would be no rock cycle.
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True
False
True
A convection current is the movement of particles within a fluid when the fluid is heated. Convection currents occur in the Earth, too. Where do convection currents of magma happen?
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In the mantle and the crust.
In the mantle and the core.
In the crust and the atmosphere.
In the mantle and the core.
Based on the diagram, what rock is formed due to high heat and pressure?
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Sedimentary
Metamorphic
Igneous
Metamorphic
Physical weathering of rocks occurs when rocks break down into smaller pieces. Which of the following could cause weathering?
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Air temperature
Water
Wind
Plant growth
All of the above
All of the above
Radiation is the transfer of energy by electromagnetic waves. Solar radiation comes from the sun. Earth absorbs radiation from the sun. About 71 percent of radiation from the sun is absorbed. It is absorbed by Earth’s atmosphere and Earth’s surface. What important process is being shown in the diagram below?
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The Earth absorbs some heat energy, but also reflects some back.
All heat energy is being absorbed from the sun.