Chapter 3 Review: Rocks

Question and Answer Samples and Techniques

TRUE or FALSE?TRUE or FALSE?

The Three major types of rocks are Igneous, Sedimentary and Extrusive.

Metamorphic

Cementation often occurs directly after Earth materials are _____________ ?

Compacted

This process forms what type of rock?

Which of the following would NOT be a major process in the formation of sedimentary rock.

erosion

deposition

melting

compaction

Ripple marks likely indicate that the rock formed……..

Near or in water

TRUE or FALSE?TRUE or FALSE?

Metamorphic rocks that have a banded appearance due to the alignment of minerals are called foliated rocks.

Which rock is made up of the smallest sediments?

Shale

Breccia

Sandstone

Conglomerate

A fine grained igneous rock forms…..

Deep within the EarthFrom magma

As the result of slow coolingAs the result of quick cooling

The formation of igneous rock is powered by?

Earth’s Internal Heat

If a rock has a porhyrtic texture, what can we conclude about the rock?

The rock went through at least two different cooling periods.

Minerals that crystallize from magma do not form at the same rate or same time. These rocks usually

have larger crystals surrounded by much smaller crystals.

How could you easily distinguish a black and white gneiss from a similar colored granite?

The gneiss is foliated

Foliated = bands or layers

Marble is an example of a

foliated metamorphic rock

nonfoliated sedimentary rocknonfoliated metamorphic rockintrusive igneous rock

Which of the following is a fine-grained, light-colored extrusive igneous rock?

RhyoliteGranite

LimestoneSchist

Igneous rocks are classified by

composition and age.

composition and texture.

texture and size.

texture and presence of fossils.

What are the main agents of metamorphism?

compaction, cementation, and heat

heat, pressure, and hydrothermal solutions

heat, pressure, and erosion

heat, weathering, and erosion

Which of the following is NOT an example of an igneous rock?

granite

sandstone

basalt

rhyolite

A(n) __________is any solid mass of mineral or mineral-like matter that occurs naturally as part of Earth.

Rock

Most rocks, such as granite, occur as a solid mixture of _____________?

Minerals

This produces low-grade metamorphism?

Contact metamorphism

This occurs during mountain building?

Regional Metamorphism

TRUE or FALSE?TRUE or FALSE?

Much of the upper mantle is thought to be made of granite.

Ultramafic