igneous rock
how are igneous rocks formed?
by magma cooling
how are metamorphic rocks formed
when rocks are subjected to high heat and pressure
how are sedimentary rocks formed
by the breaking down or erosion of materials
can the rock cycle end
no, there is no beginning and no end
at what temperature do rocks melt
1,100-2,400 degrees Fahrenheit
what are the two types of igneous rocks
intrusive and extrusive
example of metamorphic rock
gneiss
example of sedimentary rocks
sandstone
what is the rock cycle?
the process in which the three types of rocks go through changes to become a different type of rock
how does water break rock
as the water freezes it expands, widening the cracks and splitting apart the rock
example of igneous rock
granite
what type of rocks can change into metamorphic rocks
sedimentary, igneous or pre-existing metamorphic rock
what kind of rock can become sedimentary
igneous
when do rocks change form
when it is exposed to extreme heat and pressure within the crust
what happens when rock cools
solidifies instantly
what type of rock can change into igneous
sedimentary rocks
are metamorphic rocks hard or soft
hard
are sedimentary rocks hard or soft
soft
what powers earths rock cycle
earths internal heat engine
how many years does the rock cycle take
approximately 20 million years
are igneous rocks hard or soft
hard