Show:
Layers of Earth
Plates
Earthquakes
Volcanoes
Random
100
The thinnest, least dense layer of Earth
What is crust
100
This is the theory that Earth's plates have shifted from their original positions to where they are currently
What is continental drift
100
What is the study of earthquakes called?
What is seismology
100
Magma that has erupted out of a volcano is called ____
What is lava
100
This is the name given to the super-continent that supposedly once existed when continents were joined
What is Pangaea
200
The thickest layer of Earth
What is the mantle
200
This is when two tectonic plates collide
What is a convergent boundary
200
These are the fastest earthquake waves
What is P Waves
200
This type of explosion produces lava
What is non-explosive
200
This is the layer of the Earth we live on
What is the crust
300
This layer of the Earth is the most dense
What is the core
300
This is when two tectonic plates move apart from each other
What is divergent boundary
300
These are the second earthquakes waves to hit
What is S Waves
300
This type of explosion produces pyroclastic material
What is explosive
300
These are underwater mountain chains
What are mid-ocean ridges
400
This layer of the Earth is composed of molten iron and nickel
What is the outer core
400
This is when two tectonic plates slide past each other
What is transform boundary
400
These earthquake waves cause the most damage
What are surface waves
400
Magma and ash that is shot out of a volcano and hardens in the air is called ___________
What is pyroclastic material
400
This is what it is called when one plate is forced under another.
What is subduction
500
This is where most earthquakes and volcanoes occur
What is at plate boundaries
500
This is a crack in the Earth's crust
What is a fault
500
The group of volcanoes that form around the Pacific Ocean are known as this __________
What is the Ring of Fire
500
This is why scientists think that continental drift actually occurred.
What is fossils of similar animals found on opposite continents. OR... the continents seem to fit together like a puzzle.