Unit 4 Rocks Review

Which process(es) would be required to change metamorphic rock into an igneous rock? CHECK ALL THAT APPLY.

• Cementing and Compaction

• Heat and Pressure

• Melting

• Cooling and Solidification

Using the diagram, indicate which rock type is represented by the letter C.

• Metamorphic

• Igneous

• Sedimentary

Tags

NGSS.MS-ESS2-1

Which rock forming process is shown the image? 

• Erosion and pressure creating metamorphic rock.

• Pressure creating igneous rock

• Increasing pressure compacting sediments into sedimentary rock.

• Intense pressure morphing preexisting metamorphic rock into another type of metamorphic rock.

Which of these provides the best evidence of the environment in which an igneous rock was formed?

• Texture

•   Size

• Color

• Thickness

Sometimes metamorphic rock is found next to an igneous intrusion, as shown in the drawing. According to geologists, what causes this?

• 1. The metamorphic rock was lighter than the magma and floated to the top and sides.

• 1. The surrounding rock was metamorphosed when it came into contact with the hot magma.

• 1. Vapor from the magma condensed to form metamorphic rock.

• 1. The magma replaced all but the outer edge of existing metamorphic rock.

Which of these can determine the size of grains in igneous rocks?

• Amount of rare minerals

• Distance from an earthquake

• Size of the volcano

• Cooling rate of molten rock

Refer to the illustration.  In a sedimentary rock, the amount of rounding of a clast is an indication of –

• The distance the clast has traveled before lithification

• The temperature during the formation of the rock

• The amount of gas in the lava during cooling

• The type of fossil that might be present in the shale

Indicate which of these igneous rocks contain large crystals.  Check all that apply.

• Gabbro

• Granite

• Basalt

• Obsidian

Which type of sedimentary rock is depicted below?

• Evaporite

• Organic

• Chemical

• Clastic

The picture below shows a limestone building block. Which observation best shows that the limestone was formed from ocean sediments?

• The thickness of the rock layers

• The number of fossils

• The type of fossils

• The size of the fossils

Tags

NGSS.MS-ESS2-3