Show:
Rocks and Minerals
Scientists and Weathering
Rocks and Minerals 2
Metals
Miscellaneous
100
the rarest gemstone
What is a ruby?
100
the two types of weathering
What is physical and chemical weathering?
100
this is a special form of solid found in all minerals
What is a crystal?
100
the most useful metal?
What is iron?
100
the material used in pencils instead of lead
What is graphite?
200
the hardest substance of all
What is a diamond?
200
a person who studies minerals
What is a mineralogist?
200
often used to make chalkboards
What is slate?
200
the best conductor of electricity
What is silver?
200
decaying plant and animal material found in the earth's soil
What is humus?
300
a rare and beautiful mineral that is hard but has not yet been polished
What is a gemstone?
300
a person who studies the structure of the earth
What is a geologist?
300
smells like mud when wet
What is shale?
300
because silver is so expensive, this metal is used to conduct electricity instead
What is copper?
300
molten rock in the earth's mantle?
What is magma?
400

What mineral, when found in plants and animals, and  eaten helps support healthy blood?

Iron

400
a person who explores caves
What is a spelunker
400
molten rock that is pushed above the earth's surface?
What is lava?
400
a lightweight, nonmagnetic, rustproof metal
What is aluminum?
400
oil in its natural state
What is petroleum (crude oil)?
500
a rocklike object that looks like a mudball but has crystals inside
What is a geode?
500
scientists who study fossils
What is paleontologist?
500
a material that is very durable artificial rock
What is concrete?
500
metal that is liquid at room temperature
What is mercury?
500
fossils that are formed when mud buries a plant of animal and then quickly hardens around it
What is a fossil mold?