Show:
Earth's Interior
Continental Drift
Vocabulary
Earthquakes/Volcanoes
Plate Boundaries
100
This is the definition for CRUST
What is the cool, outermost layer of the Earth made of solid rock.
100
This was the name given to the continents when they were all joined into one landmass.
What is Pangaea?
100
What is seafloor spreading? Does it create new ocean crust?
The process of creating new oceanic crust at a divergent plate boundary - yes, new ocean crust is created.
100
In an earthquake, ____ waves travel faster than ____ waves.
P waves travel faster than s waves.
100
Plates slide past each other horizontally in this type of plate boundary.
transform boundary
200
This is the definition for MANTLE
What is the semiliquid layer beneath the crust that makes up 80% of Earth's volume.
200
This is the man who is credited for proposing the idea of continental drift.
What is Alfred Wegener?
200
What is a fault?
What is a crack or break in the Earth's lithosphere along which plates move relative to one another.
200
The _________ is the point on the Earth's surface where an earthquake occurs.
What is the epicenter?
200
Tectonic plates collide into each other, sometimes resulting in the creation of mountains at this type of plate boundary.
Convergent plate boundary
300
This is the definition for OUTER CORE
What is the layer of Earth made of liquid metal, beneath the mantle.
300
List 1-2 pieces of evidence used by Wegener and other scientists to support the theory of continental drift.
What is fossils and the shape of the continents.
300
What is a tectonic plate?
A giant block of lithosphere that rides above the mantle.
300
The _________ is the point at which slippage first occurs and is located underground.
What is the focus?
300
Plates spread apart from each other, sometimes resulting in the creation of new crust at this type of plate boundary.
Divergent plate boundary
400
This is the definition for the INNER CORE
What is the layer of the Earth made of solid metal, comprised mostly of nickel and lead.
400
What do scientists believe is the cause of the movement of the plates?
What is convection currents between the lithosphere and asthenosphere.
400
Explain the theory of plate tectonics
The theory that describes the movement of the Earth's plates
400
What are the three different types of volcanoes?
Shield, Composite, and Cinder cone.
400
What plate boundary can create mountain ranges?
What is a convergent plate boundary
500
Explain why the inner core remains solid even though temperatures reach nearly 11,000 degrees Fahrenheit.
The inner core remains a solid due to the great amount of pressure placed upon it by the other layers of the Earth.
500
Africa and South America were once joined together. How are they moving now?
They are moving farther apart.
500
What is the asthenosphere?
What is the soft, semiliquid layer of the Earth on which the tectonic plates move.
500
Explain why and earthquake and volcano occur.
Movement of tectonic plates
500
A rift valley is most likely to occur at this type of plate boundary.
Divergent plate boundary