Minerals
Solids found in nature
What are minerals?
Substances made up of minerals are called this
What are rocks?
Pieces of rock that are moved by wind and or water to form layers
TRUE OR FALSE: All types of rocks can be changed
Chalk - a rock formed when sea shells form layers of sediments
What is sedimentary?
If something is shiny or dull
What is luster?
Hot, liquid rock inside the Earth
What is magma?
This layer of a sedimentary rock is the newest
CHOOSE: top or bottom
What is the top?
The constant changing of rocks is called this
Obsidian - a glassy black rock formed when lava cools
What is igneous?
There are about this many minerals on the Earth
What is 3,000?
Igneous rocks form when hot, liquid rock does this
What is cools and hardens?
A name for different layers of rock
What is strata?
Rocks can be changed by these two things
What are heat and pressure?
Slate - formed when shale is changed by high pressure
What is metamorphic?
If a mineral can be scratched
What is hardness?
A name for magma once it has erupted from a volcano
What is lava?
It takes around this long for sedimentary rocks to form
What are millions of years?
TRUE OR FALSE: Rocks may be changed by icy cold glaciers
Granite - a rock formed when magma cools inside the Earth
What is igneous?
Patterns that atoms in a mineral are arranged in
What are crystals?
It takes around this many years for an igneous rock to form
What is 1,000 years?
The process of rocks breaking into pieces by winds, water and storms
What is weathering?
Gemstones that can be formed as rocks change
What are rubies, sapphires or emeralds?
Limestone - a type of rock formed by many layers piling up over millions of years
What is sedimentary?