Unit 3 Rocks-Study Guide

An unknown rock sample, X, formed from weathering, erosion, and compaction. Unknown rock sample X is

• a metamorphic rock

• a sedimentary rock

• an extrusive igneous rock

• an intrusive igneous rock

Which statement describes a process or step in the rock cycle?

• Sediment must be compacted and cemented before it can change to sedimentary rock.

• Igneous rock must be melted and cooled before it can change to sedimentary rock.

• Sedimentary rock must condense before it can change to metamorphic rock.

• Sedimentary rock must cool before it can change to metamorphic rock.

Which segment of the rock cycle can only take place under the surface of Earth?

• transformation of sediments into igneous rock as they are compacted

• transformation of rock into sedimentary rock under low pressure and heat

• transformation of liquid magma into igneous rock as it cools and hardens

• transformation of rock into metamorphic rock under high pressure and heat

When are igneous rocks formed?

• when layers of mud form inside Earth

• when layers of mud are compressed

• when melted rock solidifies

• when solid rock melts

Lorna decided to study rocks while on vacation in Hawaii. Which type is she most likely to find in Hawaii?

• She will find mainly igneous rock, because Hawaii has and was formed by active volcanoes

• She will find mainly sedimentary rock, because Hawaii has high winds and ocean currents.

• She will find mainly sedimentary rock, because Hawaii has a large amount of organic plant matter

• She will find mainly metamorphic rock, because Hawaii always has high temperatures.

During the analysis of a rock sample, a geologist concludes that the sample was made up of smaller pieces of rock, sand, and minerals that were transformed into a new type of rock through heat and high pressure. How should the geologist classify the sample?

• It should be classified as metamorphic rock.

• It should be classified as sedimentary rock.

• . It should be classified as igneous rock.

• It should be classified as plutonic rock.

What needs to happen for igneous rock to transform into sedimentary rock?

• . Weathering and erosion need to wear away the igneous rock, forming particles that will eventually cement into sedimentary rock.

• Low temperatures at the poles need to freeze the igneous rock, cooling and hardening it into extremely dense sedimentary rock.

• Tectonic plates must collide near the igneous rock, driving it under the surface, where it melts into sedimentary rock

• High pressure needs to compact the igneous rock, eventually melting it and forming sedimentary rock as it cools.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Which type of rock could contain fossils of woolly mammoths?

• Igneous

• Sedimentary

• Metamorphic

• Minerals

Tags

NGSS.MS-LS4-1

Slate is a type of rock that forms when shale rock is exposed to heat and pressure deep under Earth's surface for thousands of years. What type of rock is slate?

• Igneous

• Intrusive

• Metamorphic

• Sedimentary

Tags

NGSS.MS-ESS2-1

Which explanation describes how metamorphic rocks are formed?

• Metamorphic rock is formed when sedimentary and igneous rocks change over time under heat and pressure.

• Metamorphic rock is formed when earthquakes shake up the rocks so they are broken into small pieces.

• Metamorphic rock is formed when sedimentary rocks are broken down over time by wind and rain

• . Metamorphic rock is formed when lava that erupts from a volcano cools in the atmosphere