sedimentary
Clastic sedimentary rocks are composed of _____________ and _________ ______________ derived from pre-existing material.
minerals, rock fragments
Igneous rocks forms by the process of ____.
solidification
Metamorphism involves the addition of ____ and ____ to pre-existing rocks.
heat, pressure
Which process changes igneous rock into metamorphic rock?
heat and pressure
What is physical weathering?
the effects of changing temperature on rocks, causing the rock to break apart
The angularity of the edges and corners of grains in a sedimentary rock is referred to as_______?
rounding
Igneous rocks that form on Earth's surface:
extrusive
metamorphic rock formed from granite
gneiss
Which process changes metamorphic rock into sedimentary rock?
weathering and erosion
Compaction and cementation of sediments form ____ rocks.
sedimentary
Sediments form sedimentary rock by the process of ____ and ____?
compaction and cementation
Light-weight rock formed from lava and resembles a sponge:
pumice
metamorphic rock formed from limestone
marble
What process causes sedimentary rocks to turn into magma?
melting
Name the two ways metamorphic rock becomes foliated.
extreme pressure, minerals of different densities separate into bands
Name the types of sedimentary features.
stratification, ripple marks, mud cracks, fossils, and concretions
Igneous rocks are classified by texture and ____.
composition
Metamorphic rocks that have visible layers or bands.
foliated metamorphic
All rocks can ___ and ____ and change to igneous.
melt, cool
Fossils are found in what types of rocks?
organic sedimentary rocks
Type of sedimentary rock with small, tightly-packed sediments:
clastic sedimentary
Magma that is thinner and more fluid is ____.
mafic
Metamorphosed sandstone is ____.
quartzite
To get a metamorphic rock, ____ and ____ are needed. (no melting)
heat, pressure
Crystals and parallel layers form:
foliated metamorphic