Abeka 5th Grade Science Test 4
uranium
a radioactive metal used as a source for nuclear power
crystal
a special kind of solid that all minerals are formed by
geyser
an underground spring that shoots streams of boiling water and steam up into the air from time to time
silver
best conductor of electricity
humas
decaying plant and animal material in the soil
mold fossils
fossils that form when mud buries a plant or animal and then quickly hardens around it
diamond
hardest substance of all
granite
igneous
obsidian
igneous
pumice
igneous
aluminum
lightweight, nonmagnetic, rustproof metal
graphite
material used instead of lead in pencils
marble
metamorphic
slate
metamorphic
magma
molten rock in the earths mantle
Flood of Noah's time
most fossils where probably formed during this time
iron
most useful metal
crude oil or petroleum
oil in its natural state
mercury
only metal that is liquid at room temperature
spelunker
person who explores caves
mineralogist
person wo studies minerals
petrified fossils
plant and animal remains that ave turned to stone
gemstones
rare, beautiful minerals that are very hard but have not yet been polished
ruby
rarest gemstone
shale
rock tat smells like mud when its wet
slate
rock thats often used to make chalk boards
geode
rocklike object that looks like a mud ball on the outside but is filled with crystals on the inside
geologist
scientist who studies the structure of the earth
paleontologist
scientist who study fossils
limestone
sedimentary
sandstone
sedimentary
shale
sedimentary
chemical physical
two types of weathering
concrete
very durable artificial rock
