Earth
Rocks & Minerals
Random facts
Types of Rocks
Details of Rocks and Minerals
100

The largest layer of the earth

What is the mantle?

100
The characteristic of a mineral to break along smooth, straight lines, or into flat sheets.

What is Cleavage?

100

A person that studies the structure, rocks, and minerals on Earth.

What is a geologist?

100

Formed by heat and pressure below the Earth's surface

What is metamorphic rock?

100

Hard natural substance made of one or more minerals that contain organic materials.

What is a rock?

200

The thin outer layer of the Earth.

What is the Crust?

200
The color of the mark made when a mineral sample is rubbed on a harder surface.

What is the streak?

200

The movement of sediments from one place to another.

What is erosion?

200

A rock like substance that forms from decayed plant matter.

What is coal?

200

This scale is used to determine the harness of minerals.

What is Mohs Scale?

300

The center of the Earth

What is the Core?

300

Rock formed by heat and pressure deep below the Earth's crust.

What is Metamorphic?

300

Gemstones that are beautiful and rare.

What are precious stones?

300

Most of the rocks formed during the flood

What is sedimentary?

300

A mineral that can be cut and polished for use

What is a gemstone?

400

Inorganic substance found naturally.

What is a Mineral?
400

Rock that forms when layers of sediment and organic material harden.

What is sedimentary?

400

Wearing away of the Earth

What is Weathering?

400

The loose material on the surface of the Earth in which plants can grow.

What is soil?

400

The ability of a mineral to resist scratching

What is hardness?

500

A substance made of things that were never alive.

What is inorganic?

500

Rock formed from magma or volcanic lava.

What is  igneous?
500

The fake diamond

What is Cubic zirconia?

500

A type of igneous rock made from hardened lava

What is obsidian?

500

The way a mineral reflects light

What is its luster?