Metamorphic Rocks Comprehension Worksheets - Free Printable
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Step-by-step solution for: Metamorphic Rocks Comprehension Worksheets
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Show Answer Key & Explanations
Step-by-step solution for: Metamorphic Rocks Comprehension Worksheets
Let’s go through each question one by one, using the information from the text.
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1. Using first, next, then, explain how metamorphic rocks form.
First, igneous and sedimentary rocks are buried deep under layers of other rocks in Earth’s crust.
Next, they get squeezed by heavy pressure from all those layers above them, and also heated up by heat coming from inside Earth.
Then, because of that heat and pressure (but not enough to melt them), the minerals inside the rock change or rearrange — turning the original rock into a new kind: metamorphic rock.
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2. Explain why there wouldn’t be metamorphic rocks without igneous and sedimentary rocks.
Metamorphic rocks don’t just appear out of nowhere — they’re made *from* other rocks. The text says metamorphic rocks form when igneous or sedimentary rocks are changed by heat and pressure. So if there were no igneous or sedimentary rocks to start with, there’d be nothing to turn into metamorphic rocks. It’s like trying to bake a cake without flour — you need the starting ingredient!
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3. Explain how igneous rocks and sedimentary rocks can become metamorphic rocks.
Both types of rocks can become metamorphic if they’re pushed deep underground where it’s hot and under lots of pressure. For example, if a layer of sandstone (sedimentary) gets buried under miles of rock, the weight presses down on it and Earth’s heat warms it up. That changes its structure and minerals — now it’s quartzite, a metamorphic rock. Same thing happens to granite (igneous) — under heat and pressure, it can turn into gneiss.
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4. How does heat and pressure help to form metamorphic rocks?
Heat makes the minerals inside the rock more active — they can move around and reorganize. Pressure squishes the rock tightly, which forces the minerals to line up in layers or bands (like in slate or marble). Together, heat and pressure change the rock’s texture and mineral makeup — but not so much that it melts. If it melted, it would become magma, not metamorphic rock.
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5. Why do you think metamorphic rocks are formed lower in the earth’s crust?
Because that’s where it’s hottest and where there’s the most pressure. The deeper you go, the more rock is piled on top — that creates huge pressure. Also, heat from Earth’s core rises upward, so deeper areas are warmer. Since metamorphic rocks need both high heat and high pressure to form, they mostly happen deep underground — not near the surface.
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6. What might we use metamorphic rocks for?
Some metamorphic rocks are very hard and beautiful, so people use them for building and decoration. For example:
- Marble is used for statues, countertops, and fancy floors.
- Slate is used for roofing tiles and chalkboards.
- Quartzite is super tough and used for construction or as decorative stone.
They’re strong and often look nice, so they’re useful for things that need to last a long time or look elegant.
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Final Answer:
1. First, igneous/sedimentary rocks are buried deep. Next, they’re heated and pressurized. Then, their minerals change → forming metamorphic rock.
2. No igneous/sedimentary rocks = no raw material to transform → no metamorphic rocks.
3. Heat + pressure deep underground changes their structure/minerals → becomes metamorphic.
4. Heat activates minerals; pressure squeezes them into layers/bands → new rock forms without melting.
5. Deeper = more heat + more pressure → perfect conditions for metamorphism.
6. Used for buildings, countertops, roofs, art — because they’re strong and pretty (e.g., marble, slate).
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1. Using first, next, then, explain how metamorphic rocks form.
First, igneous and sedimentary rocks are buried deep under layers of other rocks in Earth’s crust.
Next, they get squeezed by heavy pressure from all those layers above them, and also heated up by heat coming from inside Earth.
Then, because of that heat and pressure (but not enough to melt them), the minerals inside the rock change or rearrange — turning the original rock into a new kind: metamorphic rock.
---
2. Explain why there wouldn’t be metamorphic rocks without igneous and sedimentary rocks.
Metamorphic rocks don’t just appear out of nowhere — they’re made *from* other rocks. The text says metamorphic rocks form when igneous or sedimentary rocks are changed by heat and pressure. So if there were no igneous or sedimentary rocks to start with, there’d be nothing to turn into metamorphic rocks. It’s like trying to bake a cake without flour — you need the starting ingredient!
---
3. Explain how igneous rocks and sedimentary rocks can become metamorphic rocks.
Both types of rocks can become metamorphic if they’re pushed deep underground where it’s hot and under lots of pressure. For example, if a layer of sandstone (sedimentary) gets buried under miles of rock, the weight presses down on it and Earth’s heat warms it up. That changes its structure and minerals — now it’s quartzite, a metamorphic rock. Same thing happens to granite (igneous) — under heat and pressure, it can turn into gneiss.
---
4. How does heat and pressure help to form metamorphic rocks?
Heat makes the minerals inside the rock more active — they can move around and reorganize. Pressure squishes the rock tightly, which forces the minerals to line up in layers or bands (like in slate or marble). Together, heat and pressure change the rock’s texture and mineral makeup — but not so much that it melts. If it melted, it would become magma, not metamorphic rock.
---
5. Why do you think metamorphic rocks are formed lower in the earth’s crust?
Because that’s where it’s hottest and where there’s the most pressure. The deeper you go, the more rock is piled on top — that creates huge pressure. Also, heat from Earth’s core rises upward, so deeper areas are warmer. Since metamorphic rocks need both high heat and high pressure to form, they mostly happen deep underground — not near the surface.
---
6. What might we use metamorphic rocks for?
Some metamorphic rocks are very hard and beautiful, so people use them for building and decoration. For example:
- Marble is used for statues, countertops, and fancy floors.
- Slate is used for roofing tiles and chalkboards.
- Quartzite is super tough and used for construction or as decorative stone.
They’re strong and often look nice, so they’re useful for things that need to last a long time or look elegant.
---
Final Answer:
1. First, igneous/sedimentary rocks are buried deep. Next, they’re heated and pressurized. Then, their minerals change → forming metamorphic rock.
2. No igneous/sedimentary rocks = no raw material to transform → no metamorphic rocks.
3. Heat + pressure deep underground changes their structure/minerals → becomes metamorphic.
4. Heat activates minerals; pressure squeezes them into layers/bands → new rock forms without melting.
5. Deeper = more heat + more pressure → perfect conditions for metamorphism.
6. Used for buildings, countertops, roofs, art — because they’re strong and pretty (e.g., marble, slate).
Parent Tip: Review the logic above to help your child master the concept of igneous sedimentary and metamorphic rocks worksheet.
