3 Types of Rocks
Formed by the crystallization of molten magma
What is igneous rock?
Molten material that forms deep beneath the Earth’s surface
What is magma?
Formed when magma hardens beneath Earth’s surface. Larger crystals form due to slower cooling.
What is intrusive igneous rock?
Composed of weathered bits of rocks and minerals
What is classic sedimentary rock?
What does metamorphism mean?
What is to change form?
Formed from the weathered products of preexisting rocks that have been transported, deposited, compacted, and cemented
What is sedimentary rock?
Magma that reaches the earth's surface
What is lava?
Formed when lava hardens
What is extrusive igneous rock?
Form when dissolved substances precipitate, or seperate from water
What is chemical sedimentary rock?
Where do most metamorphic changes occur?
What are elevated temperatures and pressures?
Formed by the alteration (means changing) of pre-existing rock deep within the Earth
What is metamorphic rock?
A process in which rocks are broken down by water, air, and living things
What is weathering?
Caused by very rapid cooling
What is a glassy texture?
Classic sedimentary rocks are classified by what
What is particle size?
Occurs near a body of magma and is driven by a rise in temperature when magma moves into rock
What is contact metamorphism?
What are the three types of rocks?
What are sedimentary, igneous, and metamorphic rocks?
Weathered pieces of Earth's elements
What is sediment?
Made mostly from iron and magnesium-rich minerals
What is ultramafic composition rock?
Name one common type of chemical sedimentary rock.
What is limestone, microcrystalline quartz, rock salt, or coal?
What are the two main categories of classification for metamorphic rock?
What is foliated and nonfoliated?
Formed 4.5 billion years ago
What is igneous rock?
To put pressure on or squeeze
What is compact?
Igneous rocks can be classified based on their what?
What is composition and texture?
What do ripples in rock layers indicate?
What is that the area was an old lake bed?
Results in large-scale deformation (folding) and high-grade metamorphism
What is regional metamorphism?