a scientist who studies the structure of the eart
granite
igneous
slate
chalkboards
gemstone
beautiful minerals not yet polished
ruby
rarest gem
petrified fossils
plant and animal remains that have turned to stone
bedrock
unmovable layer of rock below subsoil; part of earth's crust
slate
metamorphic
graphite
pencils
underground spring of boiling water
hardest substance
mold fossils
formed when mud buries a plant or animal and quickly hardens
stalactite
a stone formation hanging from a cave; formed by evaporating water and minerals
marble
metamorphic
uranium
nuclear power
petroleum
oil in its natural state
aluminum
lightweight, rustproof, nonmagnectic
Studies fossils
Palentologist
crystal
a solid form of a substance having a definite shape, flat surfaces, sharp edges
sandstone
sedimentory
concrete
artificial rock
spelunker
someone who explores caves
iron
most useful metal
The Flood
When most fossils were probably formed
Geode
mudballs with crystals inside
Shale
Smells like mud when it gets wet
Marble
statues, countertops, floors
mercury
only metal that is liquid at room temperature
silver
best conductor of electricity
Amber
Can preserve whole animals
Pumice
floats
Pumice
Igneous
obsidian
arrowheads, jewelery, knives
humus
decaying plants and animals
Copper
best low cost conductor of electricity
Extinct
no longer exists