Test 4 Chapter 4 Flashcards
The molten rock in the earth’s mantle called?
magma
Decaying plant & animal material in the soil
humus
A material that is a very durable, artificial rock?
concrete
Shmells (smells) like mood (mud) when wet
shale.
A rock that is often used to make chalkboards
slate
what material is used in pencils instead ‘o’ lead
graphite
A person who studies minerals
mineralogist
The hardest substance of all
diamond
A rocklike object that looks like a mudball on the outside but is filled with crystals on the inside
geode
Our most useful metal
iron
The rarest gemstone
ruby
The only metal that is a liquid at room temperature
mercury
the best conductor of electricity
silver
All minerals form a special kind of solid called a
Crystal
A radioactive metal used as a source for nuclear power
Uranium