4th Grade Social Science Unit 4 | Baamboozle - Baamboozle

English 16 Public

Rocks

Study Slideshow

The inner layer of the Earth. It is made up of metals.

core

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The middle of layer of the Earth. It is made of rocks.

mantle

15

The outer layer of the Earth. It's made of rocks.

crust

15

Rocks formed when different materials are deposited in the same place. These rocks are usually found in layers.

sedimentary

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Rocks formed when liquid magma cools and solidifies.

igneous

15

Rocks that have changed over time because of extreme pressure or heat.

metamorphic

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The minerals in the rock.

composition

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The shape of the grains in a rock.

texture

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Where the rock is found and what it looks like.

appearance in nature

15

The grains of most minerals have an irregular _____. Some are arranged in sheets, others are perfectly geometrical.

shape

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Minerals that have a perfect geometrical shape are called _______.

crystals

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The way the surface of a mineral looks in reflected light.

lustre

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The colour of a mineral when it is a powder.

streak

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The ____ of some minerals is easy to see. With other minerals, a dirty surface can hide the _______.

colour

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Weight of a mineral

density

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How easy it is to scratch the surface of a mineral.

hardness

15