The process by which new rock forms from old rock
the rock cycle
molten rock within the earth
magma
this word part means "to change"
morph
tiny bits of rock that have been removed by weathering and erosion
sediments
molten rock that has cooled and hardened
igneous rock
One way that early humans used rock
tools, building materials, etc.
molten rock on the Earth's surface
lava
True or False:Metamorphic rocks can be formed by all three rock types.
True
the breaking down of rock into sediment by wind and water
weathering
rocks that have changed by heat and pressure or the presence of hot, watery fluids
metamorphic rocks
the conversion of sediments into rocks by way of cementation and compaction
lithification
the Latin word for "fire"
"igne" or "ignis"
a kind of nonfoliated metamorphic rock used for centuries to create sculptures and buildings
marble
when minerals such as quartz and calcite act as cement in the pore spaces between large sediments
cementation
formed when sediments are pressed and cemented together or when materials form from solutions
sedimentary rock
What minerals a rock is made of
composition
igneous rocks that form within the Earth
intrusive rocks
mineral grains within the rock line up in parallel layers
foliated rocks
The process in which pressure from the upper layers of sediment pushes down on the lower layers, causing the sediments to stick together and form solid rock
cementation
Naturally occurring solid mixture of 1 or more minerals
rock
The shape and size of the grains that make up the rock
Texture
igneous rocks that form on the Earth's surface
extrusive rocks
mineral grains are randomly placed and do not have layers
nonfoliated rocks
Sedimentary rocks formed from the remains of once-living things are ____.
organic
Extrusive rock that cools too quickly for grain to form

volcanic glass