6.10B Classify Rocks and Rock Cycle Review

The diagram shows a river forming a delta as it slows down and enters the sea. As the river slows down, it deposits large amounts of sediment.

Which term describes the rock that will eventually form from the sediment?

• clastic

• organic

• foliated

• extrusive

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NGSS.MS-ESS2-2

Miguel wanted to identify a rock he found while hiking. The rock was composed of a mixture of pebbles and sand grains. All of the particles that make up the rock were well ounded.

This rock would probably fall into which of the following categories

• sedimentary

• igneous

• metaphorpic

• mineral

What type of rock forms when heat and pressure change the structure, texture, or composition of sedimentary rock?

• igneous

• sedimentary

• metamorphic

• clastic

Which of the following is not a foliated metamorphic rock?

• gneiss

• slate

• marble

• schist

Which of the following correctly describes the difference between a mineral and a rock?

• Rock can be made of inorganic material, but minerals are always organic.

• Rocks are made of naturally occurring material, but minerals can be synthetic.

• Rocks are made of crystalline material, but minerals are always noncrystalline.

• Rock can be made of noncrystalline material, but minerals are always crystals

Granite forms when liquid magma slowly cools within Earth’s crust. Basalt can form when lava cools on Earth’s surface. What do granite and basalt have in common?

• They are kinds of igneous rock.

• They are not made up of minerals.

• They are identical in color and texture.

• They are made up of layers of sediment.

Which of the following is a direct source of material for the formation of metamorphic rock?

• clasts

• magma

• sediments

• existing rock

Igneous rocks form when magma cools and solidifies. As the magma cools, minerals form. What effect will the rate at which the magma cools have on the texture of the igneous rock?

• the faster the magma cools, the smaller the crystals in the rock will be

• the slower the magma cools, the smaller the crystals in the rock will be

• the faster the magma cools, the more foliated the rock’s texture will be

• the slower the magma cools, the more foliated the rock’s texture will be

What processes change rock into sediments and begin the formation of sedimentary rocks

• Pressure and Heat

• Melting and Cooling

• Weathering and Erosion

• Compacting and Sementing

A large amount of sediment is deposited on a plain in a short amount of geologic time. Which of the following correctly describes a possible result?

• he crust is uplifted due to groundwater infiltrating the sediment.

• The crust subsides due to the weight of the sediment that accumulates.

• The crust subsides due to the motion of the sediment as it is deposited.

• The crust is uplifted due to the difference in weight between the sediment and bedrock.

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NGSS.MS-ESS2-2

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