Rocks and Minerals

What can happen to an igneous rock after it is formed?

• It can eventually weather into limestone.

• It can harden and remain the same size and texture permanently.

• It can be transformed to metamorphic rock.

• It can form rock that eventually becomes amethyst.

If you found a rock that appeared to have been formed directly from volcanic activity, how would you classify it?

• Volcanic rock.

• Metamorphic rock.

• Igneous rock.

• Sedimentary rock.

All of the following statements are TRUE except:

• Sedimentary rock is formed from magma leaking to the surface of the earth.

• Metamorphic rocks are rocks that are transformed into new substances by intense heat and pressure.

• The rock cycle is a model used to describe the creation, alteration, and destruction of rocks made from magma.

• The rock cycle is a way of recycling matter used to make up rocks.

Tags

NGSS.MS-ESS2-1

If you wanted to collect sedimentary rocks, what sort of characteristics would you look for in a rock's composition?

• Rock that includes sparkly crystals and other types of gemstones.

• Rock that has been transformed into new substances due to intense heat and pressure.

• Rock made from eroded material broken off other rocks and cemented together.

• Rock that formed from magma or lava during a volcanic eruption.

On a school trip, Jenny learned about a gigantic volcanic eruption and saw some of the rocks it formed. Which kind of rocks did she see?

• Chemical sedimentary

• Detrital sedimentary

• Intrusive igneous

• Extrusive igneous

Siltstone is a sedimentary rock formed from particles of weathered rock accumulating and becoming compact. Which of the following categories does this type of rock best fit into?

• Metamorphic

• Chemical sedimentary

• Intrusive igneous

• Detrital sedimentary

David is analyzing a rock. He knows that it was revealed by erosion and he can see large crystal structures through the magnifying glass. Which kind of rock is David analyzing?

• Granite

• Sandstone

• Limestone

• Slate

When a parent rock is changed due to high pressure or temperature, which type of rock is formed?

• Metamorphic

• Extrusive igneous

• Intrusive igneous

• Sedimentary

Which of the following is a key difference between detrital and chemical sedimentary rocks?

• Detrital sedimentary rock is formed at the surface of the earth.

• Detrital sedimentary rock is formed beneath the earth's crust.

• Chemical sedimentary rock is formed from dissolved material.

• Chemical sedimentary rock is formed from solid pieces of weathered rock

12. Mineral hardness is a measure of _____.

• how resistant a mineral is to scratching

• how easily a mineral breaks

• how much a mineral weighs

• the strength of the mineral