Rock Types
Igenous
what process breaks rocks into smaller pieces?
weathering
What two factors cause rocks to become metamorphic?
Heat and pressure
What process changes magma into igneous rock?
Cooling
True or False: The rock cycle always follows the same order.
False
what are loose pieces of rock, gravel, or clay called?
sediments
what process moves sediments using water.
Erosion
True or False: Metamorphic rocks melt completely.
False
What igneous rock forms when magma cools slowly underground?
Intrusive igneous rock
Can sedimentary rock become sediment again? How?
Yes, through weathering and erosion
which rock type forms from sediments that are compacted and cemented together?
sedimentary
What process happens when sediments are dropped and settle in a new location?
Deposition
Which rock type can be changed into metamorphic rock?
Any rock type
What igneous rock forms when lava cools quickly on Earth’s surface?
Extrusive igneous rock
How can igneous rock become sedimentary rock?
Weathering → erosion → deposition → compaction & cementation
what rock type forms when existing rock is changed by heat and pressure?
metamorphic
Which two processes turn sediments into sedimentary rock?
Compaction and cementation
What happens to rock particles during compaction?
They are pressed closer together
Which cools faster: magma underground or lava on the surface?
Lava on the surface
How can sedimentary rock become metamorphic rock?
Heat and pressure
what is molten rock called when found underground?
Magma
What process turns solid rock into magma?
Melting
Why does extreme pressure NOT melt rock?
Pressure changes the rock without adding enough heat to melt it
Explain why fast cooling creates small crystals.
Crystals don’t have time to grow large
Give TWO different paths a metamorphic rock could take next.
Melt into magma OR weather into sediments