Forms _________ igneous rocks that are ____________ when magma cools slowly and hardens.
What is intrusive and coarse-grained?
100
Most sedimentary rocks are formed here.
What are oceans?
100
Both of these are needed to transform the original rock.
What is heat and pressure?
100
Rocks are made of these.
What are minerals?
100
Pressures build up to the breaking point and released as seismic waves.
What is earthquakes?
200
This is formed when magma erupts onto the surface from volcanoes.
What is volcano?
200
This causes rocks on the surface to break apart.
What is weathering?
200
Grains that are not aligned in clear patterns.
What is non-foliated?
200
These rocks are formed through compaction and cementation.
What are sedimentary rocks?
200
Occurs when tectonic plates collide and rock beneath Earth's surface is pushed upward.
What is uplift?
300
Sometimes these are trapped in the rock during the cooling process, leaving tiny holes and spaces.
What are gas bubbles?
300
Sediment may consist of these.
What are rock fragments, crystallized minerals, or the remains of organisms (fossils)?
300
This means change.
What is metamorphosis?
300
These are rocks formed from the solidification of magma.
What are igneous rocks?
300
These are created when magma wedges in the cracks between plates and pushes them apart.
What are ridges (mid-ocean)?
400
Rocks that are richer in aluminum, potassium, silicon, or sodium.
What is felsic?
400
Layers of sediment or remains of organisms must be ____________ and ___________ together on the Earth's surface.
What is compacted and cemented?
400
It has ribbon-like layers.
What is gneiss?
400
Metamorphic rocks can be naturally made from these types of rock.
What are sedimentary, igneous, and metamorphic rocks?
400
Because of these in the lithosphere along boundary areas, there are pathways for molten rock to reach the surface and form volcanoes.
What are fractures (cracks)?
500
This rock has a glassy surface and is created from lava that cools quickly and has no crystals. It is used as arrowheads because it has sharp edges.
What is obsidian?
500
Sand and pebbles are visible in this rock.
What is conglomerate?
500
When rocks are heated by nearby magma?
What is regional metamorphism?
500
These are the three subtypes of sedimentary rock.
What are clastic, organic, and chemical rocks?
500
Years of these two types of alteration have changed the half dome in Yosemite National Park from a jagged and angular dome to a smooth-domed appearance.