Plate Tectonics
Scientists use these waves to study the interior of the earth.
What are seismic waves.
A transform boundary is where the plates move in this direction.
What is sliding past each other?
Name one device that measures crust motion.
Acceptable answers:
What is a tilt meter, creep meter, laser-ranging device, GPS satellites
Magma above the surface is called.
What is Lava.
The minimum number of data points necessary to find the epicenter of an earthquake.
What are three?
Both of these qualities increase as you go further toward the center of the earth.
What are Heat and pressure?
Rift valleys occur at this boundary on continental crust.
What is a Divergent boundary?
The difference between the focus and the epicenter.
The epicenter is the point on the surface directly above the focus.
The hole left in the top of a volcano after an eruption.
What is a crater?
The rock mass at the core of a mountain range.
What is a Batholith.
The uppermost part of the mantle.
What is the Lithosphere?
The type of stress at a convergent boundary.
What is compression.
The Richter is based on these.
The size of the earthquakes seismic waves.
The plate boundaries around the world that have volcanic and earthquake activity form this shape.
The time between eruptions dormant volcanoes.
The theoretical super-continent that existed 300 million years ago.
What is Pangaea or Urcontinent?
In a normal fault, this is the block of rock on the bottom.
What is the foot wall?
The order of waves speeds caused by earthquakes.
What is p first
s second
surface last
Viscosity is an object's ________.
What is the resistance of a liquid to flowing.
High viscosity = high resistance = slow motion
The geological theory that Alfred Wegener worked to disprove.
The dried-up apple theory.
This type of geological activity occurs at mid-ocean ridges.
What is sea-floor spreading?
The terms used to describe upward and downward folds in an area under compression.
What are anticline and syncline?
Energy in the earth's crust is built up because of this.
Friction.
A volcano that has a wide, gentle slope.
The name of the Greek historian who gave an early account of tsunami and earthquake activity.
Who is Thucydides.