Show:
Continental Drift
Sea Floor Spreading
Earthquakes
Igneous Rocks
Volcanoes
100
This is the idea that continents are in constant motion on the surface of Earth.
What is Continental Drift?
100
This allows scientists to see changes in magnetic activity.
What is Magneto metals?
100
Earthquakes often occur along _____.
What is a Fault?
100
This type of rock forms when hot molten rocks cools and hardens.
What is an igneous rock?
100
This volcano has a basaltic eruption.
What is a shield volcano?
200
This was a super continent where all continents were connected.
What is Pangea?
200
Scientists use this to send sound waves to the bottom of the ocean floor and see the depths of the ocean.
What is Echo Sounding?
200
This is when rocks pass their elastic limit and break releasing energy in the form of seismic waves.
What is an Earthquake?
200
Igneous rocks are classified by _____ and _____.
What is Color and texture?
200
This is the smallest type of volcano.
What is a cinder cone?
300
These clues helped Wegener support his continental drift theory.
What are rock clues, fossil clues, and climate clues?
300
This is a canyon where the ocean gets very deep.
What is Submarine canyon?
300
This is where the rock breaks below the ground during an earthquake.
What is the focus?
300
The three color groups used to classify igneous rocks.
What is dark, intermediate, and light?
300
Volcanoes are found on _____ boundaries.
What is a convergent boundary?
400
This clue showed that mountain ranges on different continents had similar origins.
What is rock clues?
400
The theory that new crust is formed at mid-ocean ridges.
What is Sea-Floor Spreading?
400
This is the place above the focus on the surface.
What is the epicenter?
400
These are the two origins of igneous rocks.
What is intrusive and extrusive?
400
This type of molten rock has high resistance to flow.
What is rhyolite?
500
Wegener used _____ clues when he studied the sediment deposited by glaciers.
What is Climate clues?
500
This measures the magnetic field.
What is a Magnometer?
500
This wave moves across the surface causing the most damage during an earthquake.
What is an I-wave?
500
This is when rocks have holes due to gas charged magma.
What is vesicular texture?
500
This volcano has the most violent eruption.
What is a composite volcano?