Show:
Layers
Continental Drift
Plate Tectonics
Disasters
Boundaries
100

How many layers of the Earth are there? 

Bonus- List the layers of the Earth in order from the outside in.

There are 4 main layers of the Earth.

What is crust, mantle (lithosphere, asthenosphere, mesosphere), outer core, inner core.

100

what is this theory?

continents were once joined together and have since "drifted" apart.

100
What 2 layers of the Earth do we need to know the most about to understand plate tectonics?
crust and mantle or lithosphere and asthenosphere
100

Where most earthquakes occur.

What is along plate boundaries?

100
What are the 3 main types of boundaries?
Convergent, divergent, transform
200
Which layer of the Earth do we know the most about?
What is the crust. It is the only layer we can directly observe. (Can't go any deeper)
200

What is the name of the land mass that Wegener named when studying continental drift?

Pangaea

200
How is plate tectonics different than continental drift?
Plate tectonics explains the why and how behind the movement of the continents.
200

The boundaries along which most volcanoes erupt.

What are divergent plate boundaries?

200
Most earthquakes occur along which type of boundary?
transform
300

What happens to the layers of the Earth as they get closer to the center (or inner core)?

The layers get hotter and denser as they get closer to the center (or inner core)

300

This theory led to what current theory regarding how drift happens

Plate Tectonics (credited to Holmes [thermal convection] and later Hess [seafloor spreading])

300
Plate tectonics not only told us about how the appearance of the Earth has changed, but also how new ________ forms.
crust
300

A fast moving, avalanche of hot gas, ash, and rock that erupts from an explosive volcano.

What is pyroclastic flow?

300
What EVENTS do we often see occurring at plate boundaries?
Earthquakes and volcanoes - would also take subduction, crust building
400

What is the state of matter of the inner core and why?

Solid - the pressure is too great (even though it is VERY hot so you would think it would be a liquid)

400

By studying earthquakes, scientists have learned more about Earth's...

What is interior?

400
Name the new information that supported plate tectonics that continental drift theory didn't have.
Layers of the Earth
400

Seismic waves that cause the most damage at Earth's surface.

What are surface waves/ S-wave/ Secondary ?

400

What does the prefix "di" mean in divergent boundary?

away as in plates moving away form each other.

500

How do we know about the layers of the earth if we can't directly observe them?

Seismology - evidence provided by studying seismic waves

500

Most of the active volcanoes in the world are located here.

What is the Ring of Fire?

500

This theory states that Earth's plates are in slow, constant motion, driven by convection currents.

What is the theory of Plate tectonics?

500

The type of boundary the deepest earthquakes occur?


What is convergent?

500
Explain how the densities of oceanic crust and continental crust influence what happens when the 2 plates converge.
Denser oceanic crust subducts below the less dense continental crust.