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Lesson 4
Volcanoes
100
Arrange these layers in order from the outermost to the innermost layer: asthenosphere, outer core, mesosphere, lithosphere, and inner core
lithosphere, asthenosphere, mesosphere, outer core, inner core
100
What was the supercontinent called?
Pangea
100
During subduction, which plate is denser, the continental or oceanic plate?
The oceanic plate
100
What is the epicenter?
The place directly above the focus on Earth's surface
100
What is a dormant volcano?
a volcano that hasn't erupted recently, but will erupt again eventually
200
Which layer goes through 2 different compositional layers?
The asthenosphere
200
What was the theory called that states that Earth's surface is made up of giant, moving slabs?
Plate Tectonics
200
What is deformation?
the bending, tilting, and breaking of rock
200
What is the term for when the rock returns to its original shape after elastic deformation?
Elastic rebound
200
What are the 3 types of volcanoes?
Shield volcano, a cinder cone volcano, and a strata cone volcano
300
What is the term for when high-density materials are pulled to the center while low-density materials are pushed toward the surface?
Differentiation
300
What are the 3 things that cause tectonic plate motion?
Mantle convection, ridge push, and slab pull
300
Which types of stress go with each boundary?
convergent- compression divergent- tension transform- shear stress
300
What types of faults occur at each plate boundary?
convergent- reverse fault divergent- normal fault transform- strike-slip fault
300
Which type of volcano is also known as a composite volcano?
A strata cone volcano
400
Approximately, how old is the Earth?
About 4.6 billion years old
400
How does evidence from sea-floor spreading support the theory of Plate Tectonics?
Magnetic Reversal
400
What landform occurs when 2 oceanic plates collide with each other?
Ocean Trenches
400
True or False-- The focus is where the first motion of an earthquake occurs.
True
400
What are the causes of volcanoes?
Sea-floor spreading, subduction zones, and hot spots
500
What is the heat source within Earth's interior?
Radioactive decay
500
What are the 3 pieces of evidence that support Continental Drift?
The shapes of the continents, rocks and fossils, and climatic evidence
500
True or False-- The Hawaiian Islands formed where the Pacific Plate collided with the Eurasian Plate.
False, the Hawaiian Islands were formed on a hot spot
500
What type of stress occurs at each type of fault?
normal fault- tension reverse fault- compression strike-slip fault- shear stress
500
What are the effects of volcanoes?
They can block sunlight and drop global temperatures