Rocks
molten rock in the earth's mantle
What is magma
the hardest substance of all
What is diamond?
Our most useful metal
What is iron?
decaying plant and animal material in the soil
scientists who study fossils
Who are paleontologists?
a very durable artificial rock
What is concrete?
Rare beautiful minerals that are very hard but have not yet been polished
What are gemstones?
the best conductor of electricity
What is silver?
A person who studies the structure of the earth
Who is a geologist?
Plant and animal remains that have turned to stone
What are petrified fossils?
This rock smells like mud when it is wet
What is shale?
The rarest gemstone
What is the ruby?
The only metal that is liquid at room temperature
What is mercury?
Oil in its natural state
What is crude oil or petroleum?
Fossils that form when mud buries a plant or animal and then quickly hardens around it
What are mold fossils?
The rock that is often used to make chalkboards
What is slate?
what it is called when all minerals form a special kind of solid
What is a crystal?
A radioactive metal used as a source for nuclear power
What is uranium?
An underground spring that shoots streams of boiling water and steam up into the air from time to time
What is a geyser?
When most fossils were probably formed
What is during the flood of Noah's time?
A rocklike object that looks like a mudball on the outside but is filled with crystals on the inside
What is a geode?
A person who studies minerals
Who is a mineralogist?
A lightweight, nonmagnetic, rustproof metal
What is aluminum?
two types of weathering
What is chemical and physical?
not a fossil question... A person who explores caves
Who is a spelunker?