Rocks and Minerals Study Guide

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Chapter 3- Rocks and Minerals Review

Igneous Rocks

When melted rock cools and hardens it forms Igneous Rocks.

Sedimentary Rocks

Layers of sediments pressed together over time.

Metamorphic Rocks

rocks formed deep within the earth by intense heat and pressure

sediments

tiny particles of rock, soil, and other materials

lava

magma that reaches Earth's surface

magma

melted rock inside the Earth

intrusive rock

Igneous rock that forms when magma cools and hardens below Earth's surface

extrusive rock

igneous rock that forms when lava cools and hardens above Earth's surface

Moh's Hardness Scale

shows the hardness of some common minerals; hardness is a property of minerals

diamond

the hardest mineral

mineral properties

1.color
2.streak
3.luster
4.cleavage
5.hardness

luster

shine; the way light reflects off the surface of a mineral

cleavage

the way a mineral splits

rock cycle

a process where rock changes from one form to another

granite

Igneous, intrusive rock used as a building material because it is very durable and strong (ex. The Great Wall of China)

Pumice

Igneous, extrusive rock- very light gray to a medium gray- contains a large number of gas bubbles- looks something like a sponge- very light weight- most pieces will float in water

Name a metamorphic rock.

Marble, which is used on statues and buildings

fossils

often found in sedimentary rocks; can show us what living things looked like in the past

How are rocks broken down?

Weathering or erosion; wind, water, and ice can break down rocks and carry sediments

Flickr Creative Commons Images

Some images used in this set are licensed under the Creative Commons through Flickr.com. Click to see the original works with their full license.

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