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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


tiny particles of rock, soil, and other materials


magma that reaches Earth's surface


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


the hardest mineral

mineral properties



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


the way a mineral splits

rock cycle

a process where rock changes from one form to another


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


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


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

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