Earth's Structure
a scientist who studies the structure of the earth
geologist
a material found in God's creation that is helpful to us
natural resource
a type of rock formed when magma cools
igneous
the hardest of all substances
diamond
the most useful metal
iron
a man-made rock that is very durable; used in construction projects
concrete
the outermost layer of the earth
crust
the forming of soil from rock
weathering
type of rock formed by sediment that is pressed together
sedimentary
the rarest gemstone
ruby
the only metal that is liquid at room temperature
mercury
a rocklike object that looks like a mudball on the outside and is filled with crystals on the inside
geode
molten rock in the earth's mantle
magma
the wise use of natural resources
conservation
a rock that was changed from one type to another by heat and pressure
metamorphic
a rare and beautiful mineral that has NOT been cut and polished
gemstone
a lightweight, silver colored metal that is rustproof
aluminum
the only thing that will scratch or cut a diamond
another diamond
a molten layer of earth beneath the crust
mantle
decaying plant and animal material in soil
humus
a sedimentary rock that smells like mud when it is wet
shale
a mineral used in pencils instead of lead
graphite
the best LOW-COST conductor of electricity
copper
the main component in plaster of Paris
gypsum
a ball of solid iron inside the earth 1,600 miles in diameter
inner core
the two types of weathering
physical and chemical
a metamorphic rock that was once shale; used to make chalkboards
slate
a scientist who studies minerals
mineralogist
the BEST conductor of electricity
silver
a special substance that is formed from minerals
crystal