Minerals
Rocks
Metals
Earth
Gem or mineral
100
The mineral used in pencils
What is graphite?
100
A material that is a durable artificial rock.
What is concrete?
100
A bright yellow metal.
What is gold?
100
A person who explores caves.
What is a spelunker?
100
The hardest of all substances.
What is a diamond?
200
A mineral that can easily be broken into flat sheets.
What is mica?
200
A rock that smells like mud when it is wet.
What is shale?
200
The best conductor of electricity.
What is silver?
200
Oil in its natural state.
What is crude oil or petroleum?
200
The rarest gemstone.
What is a ruby?
300
A mineral used in plaster of Paris.
What is gypsum?
300
A rock that is used to make chalkboards.
What is slate?
300
The most useful metal.
What is iron?
300
A rock that looks like it is growing up from the ground.
What is a stalagmite?
300
A brown or black rock-like substance used for fuel.
What is coal?
400
A mineral used for arrow heads.
What is flint?
400
Granite, pumice and obsidian are these types of rocks.
What are Igneous?
400
A metal used as a source of nuclear power.
What is uranium?
400
A rock that looks like it is growing down from the ceiling of a cave.
What is a stalactite?
400
The preserved remains of plants or animals.
What is a fossil?
500
A scientist who studies minerals.
What is a mineralogist?
500
Slate and marble are these types of rocks.
What are metamorphic?
500
A metal that is liquid at room temperature.
What is mercury?
500
Weathering from rain, ice and wind.
What is physical weathering?
500
A rare, beautiful mineral that is hard and has not been polished.
What is a gemstone?
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