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Invention man uses to harness power of water
Water wheel
Water as gas
Steam
metal that is the best conductor of electricity
silver
rarest gemstone
ruby
like charges ? ; opposite charges ?
repel; attract
sedimentary rocks
limestone
sandstone
shale
Boiling point of water
212°F
bending of light
refraction
Freezing point of water
32°F
metamorphic rocks
slate
marble
most useful metal
iron
State of matter that has no definite shape but it's molecules stay together
Liquid
Everything that takes up space and has mass
Matter
metal liquid at room temperature
mercury
boiling point
temperature at which liquid becomes a gas
pencil lead
graphite
push or pull
force
what where early compasses were made from
lodestones
The state of matter that has no definite shape and its molecules diffuse
Gas
active at night
nocturnal
the tendency of gases to float away and spread themselves out thinly
diffusion
State of matter that has a definite shape
Solid
igneous rocks
granite
pumice
obsidian
largest group of mammals
rodents
melting point
temperature at which a solid becomes a liquid