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What is an example of evidence used to support the theory of plate tectonics
Teacher's Discretion
What is formed when two continental plates collide?
Mountains
What causes plate tectonics to move?
Convection Currents in the mantle.
What is the place where convection currents takes place?
Mantle
A large wave that is caused by an earthquake at the bottom of the ocean that travels miles inland.
Tsunami
What do the tectonic plates "float" on?
Mantle or Asthenosphere or Convection Currents
What type of rock are oceanic plates made of _____.
Basalt
What is the primary rock that makes up the continental crust?
Granite
What is the name of the supercontinent that existed 200 million years ago?
Pangaea
A plate boundary that has two plates moving away from one another in opposite directions.
Divergent
Vibrations in the earth caused by the sudden movement of rock are called ______.
Earthquakes
The Richter scale measures an earthquakes ____.
Magnitude
A seismic wave that compresses and expands the ground like an accordion.
Primary wave or P wave
The pattern of lines on a piece of paper is known as a ____.
Seismogram
A _________ zone is the area where one plate is being pushed down back into the mantle underneath another plate.
Subduction
The point on the earth’s surface directly above the point where an earthquake occurs is called the ____.
Epicenter
The area beneath the Earth’s surface where rock that was under stress begins to break or move.
Focus
An earthquake’s ________________ is a single number that geologists assign to an earthquake based on the earthquake’s size.
Magnitude
A ____________ boundary is when two plates are colliding with one another.
Convergent
A _____________________ forms due to a divergent boundary at the bottom of the ocean.
Mid-Ocean Ridge
By looking at the difference in the time it takes for P and S waves to arrive at a recording station, scientists can determine an earthquake’s ________ from the epicenter
distance
Who came up with the theory of plate tectonics?
Alfred Wegner
A seismic wave that vibrates the ground at an angle of 90 degrees (perpendicular) to the direction the wave is traveling.
Secondary Wave or S wave
A _____________ boundary is when two plates are sliding past one another.
Transform
What is the minimum number of recording stations that you need in order to locate the epicenter of an earthquake?
3