Mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust
What is a volcano
100
Measures magnitude of an earthquake
What is Richter Scale
100
a theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates that move slowly over the underlying mantle.
What is a plate tectonics
100
Thinnest layer of the Earth
What is crust
200
Curious scientist who thinks that the continents were together at some point
Who is Alfred Wegener
200
Formed by the movement of tectonic plates on the surface of the earth.
What is the formation of a volcano
200
A sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action.
What is an earthquake
200
Earthquakes and Volcanoes are usually located in relation to these
What is a plate boundary
200
A number of rigid, but moving, pieces of Earth's surface
What is tectonic plates
300
When the continents once moved and were together but then split apart.
What is continental drift
300
Stuff that comes out of a volcano
What is lava
300
Earthquake magnitude that happened in chile
What is 9.5 magnitude
300
The mid-ocean ridge is an example of a ____________________ boundary and ___________________ occurs here where new ocean floor is formed.
What is divergent boundary; sea-floor spreading
300
The theory that all continents are fragments of Pangaea now drifting apart
What is Continental Drift Theory
400
300 Million years ago
When did Pangea begin to break
400
Before it comes out of a volcano
What is magma
400
Earthquakes mostly happens at
What is a fault
400
Name four of the major plates
What is any of the following North American plate, South American plate, Eurasian Plate, Indoaustralia plate, African plate, Antarctica plate
400
States that youngest rocks of ocean floor are at divergin boundaries, moving outward
What is seafloor spreading
500
All the continents were once joined together in a single landmass and have since drifted apart.
What was Wegener Hypothesis
500
Largest volcano eruption
What is Tambora
500
Most earthquakes happen in what state
What is California
500
The two types of convergent boundaries
What is subduction (where volcanoes often occur) and collision (where mountains are usually formed)
500
Although the hottest layer of the Earth, this layer is solid metal