Earthquakes
Rapid shaking of the ground caused by stress and the release of energy in the Earth's lithosphere.
What is an earthquake?
The boundary where two tectonic plates collide?
What is a convergent boundary?
The theory that the continents have moved and continue to move slowly over time.
What is continental drift?
The thickest layer of Earth.
What is the mantle?
The boundary where two tectonic plates slide by each other.
What is a transform boundary?
What are P-waves?
The boundary where two tectonic plates separate from each other.
What is a divergent boundary?
All the continents we know today were once connected forming this supercontinent.
What is Pangaea?
The hottest, most dense layer of Earth.
What is the inner core?
The layer of Earth that contains tectonic plates.
What is the crust?
The point inside Earth where an earthquake originates (starts).
What is the focus?
When a denser oceanic plate sinks below a less dense continental plate.
What is subduction?
This scientist used fossil clues, rock clues, climate clues and the puzzle-like appearance of the continents to formulate his theory of continental drift.
Who is Alfred Wegener?
The only layer of Earth that is entirely liquid.
What is the outer core?
This type of plate boundary forms a fault line like the San Andreas Fault in CA.
What is a transform boundary?
Seismic waves that move up/down, side to side and are 2nd to arrive.
What are S-waves?
Most likely to occur at a transform boundary.
What is an earthquake?
This is a mountainous area in the middle of the ocean where new oceanic crust forms.
What is a mid-ocean ridge?
These two substances make up the inner core.
What are iron (Fe) and nickel (Ni)?
The seismic waves that cause the most destruction during an earthquake.
What are surface waves?
The point on the surface of Earth directly above the focus of an earthquake.
What is the epicenter?
What are mountains?
These occur when heated magma rises and cooler magma sinks in the Mantle.
What are convection currents?
What is the lithosphere?
What are continental and oceanic?