7th Grade Worksheets
The Rock Cycle
Fill in the names of the rocks in this diagram.
Heat and
Pressure
Melting
Weathering
and Erosion
Compacting
and Cementing
Heat and
Pressure
Weathering
and Erosion
Melting
Weathering
and Erosion
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Cooling
7th Grade Worksheets
Explain the steps of the rock cycle below.
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How To Train Your Dragon © 2014 DreamWorks Animation LLC. All Rights Reserved.
7th Grade Worksheets
Answer:
Metamorphic Rock
Heat and
Pressure
Melting
Weathering
and Erosion
Heat and
Pressure
Sedimentary Rock
Compacting
and Cementing
Magma
Weathering
and Erosion
Melting
Sediment
Cooling
Igneous Rock
Weathering
and Erosion
How To Train Your Dragon © 2014 DreamWorks Animation LLC. All Rights Reserved.
7th Grade Worksheets
Explain the steps of the rock cycle below.
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Weathering
and erosion – Igneous, sedimentary and metamorphic rocks are
broken into smaller particles by wind and water. Sand particles in the wind rub
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against rocks and slowly break off particles like sandpaper. Rocks in running
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water lose their rough edges over time, turning into smooth pebbles. Water
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seeps into cracks in mountains and when it freezes, expands and cracks open
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the rocks. When the rock particles break down and stay in the same area, it is
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called weathering. When they are carried away by wind and water, it is called
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erosion.
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Transportation – Eroded rock particles are carried away by wind and/or water
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Deposition – When the wind and water slow down, the rock particles get
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deposited in a layer of sediment.
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Compaction and cementation – As the layer of sediment becomes bigger, the
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weight and pressure compacts the particles at the bottom. Minerals fill in the
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gaps between the particles and then solidify, acting like cement. Over years, the
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sediment becomes sedimentary rock.
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Metamorphism – Over time, sedimentary or igneous rocks end up buried deep
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underground (usually due to the movement of tectonic plates), where the high
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heat and pressure turns them into metamorphic rock.
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Rock melting – Metamorphic rocks underground melt to become magma.
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When a volcano erupts, magma flows out of it and cools and hardens to
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become igneous rock. Once igneous rock is formed, the process of weathering
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and erosion begins again.
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How To Train Your Dragon © 2014 DreamWorks Animation LLC. All Rights Reserved.