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What are the 4 layers of the Earth
Inner Core, Outer Core, Mantle, Crust
Which of the 4 layers is molten rock?
Outer Core
What two substances are the inner core made of?
Iron & Nickel
What state of matter is the mantle?
Semi-solid
In which layer would you find tectonic plates?
crust
Which layer is the thickest (4 layers)?
Mantle
What are the 3 types of tectonic plates?
convergent, divergent, transform
What type of plates cause mountain ranges to form?
convergent
What two types of plate boundaries do earthquakes occur at?
convergent & transform
What does subduction mean with reference to plate boundaries?
One plate slides under another
True or False-Igneous rocks make up ½ of all rocks in the Earth
False 2/3
How are igneous rocks formed?
cooling of magma
What’s the difference between lava and magma?
lava – above ground, magma- under
where is extrusive igneous rocks formed
Formed outside of earth
Give one example of an extrusive igneous rock
basalt, pumice, quartz, obsidian
Describe the size of crystals in an extrusive igneous rock
small, not seen to naked eye
What is an intrusive igneous rock?
Formed inside of earth
Describe the size of crystals in an intrusive igneous rock
large, can be seen by naked eye
Give one example of an intrusive igneous rock
granite
What is a batholith?
chamber of magma beneath Earth’s surface
What do sedimentary rocks tell us about the history of a landscape
where water once was
What are sediments?
the broken down pieces of rock
Define weathering
the breakdown of rock
What are the three actions that cause weathering?
wind, rain, ice