Plate Boundaries
Measurements
Waves
Damage
Vocab/Misc.
100
What are the three main types of plate boundaries?
Convergent, Divergent, and Transform (and uncertain but that one doesn't matter as much)
100
What is the range of the Richter Scale?
0-10
100
What are the two types of seismic waves?
P and S Waves.
100
What is an example of damage that is caused by earthquakes?
Building collapse, infrastructure (roads, bridges, etc.) break, electrical fires, underground piping bursts.
100
What is the name of the supercontinent that existed 225 million years ago?
Pangaea
200
What causes the plates to move?
Convection currents in the asthenosphere.
200
Define the magnitude of an earthquake.
The strength or measured energy released by the earthquake.
200
Which wave moves faster, P or S waves?
P waves move faster.
200
A strong earthquake that occurs on the ocean floor could result in the formation of...
A tsunami
200
This is the point at which an earthquake originates in the crust.
Focus
300
At which type of plate boundary would volcanoes be found at?
Convergent
300
What is used to measure the MAGNITUDE of an earthquake?
The Richter Scale
300
This type of seismic wave can NOT travel through liquids (such as the liquid outer core of the planet)
S Waves
300
On level IX of the Mercalli scale, what type of visible damage would be detected?
The ground begins to crack, houses begin to collapse, and pipes break.
300
This is the point on the Earth's surface where an earthquake originates.
Epicenter
400
Which geographic feature is formed at divergent plate boundaries at the bottom of the ocean?
Mid-ocean ridges
400
What does the INTENSITY of an earthquake mean?
The intensity is the visible damage that is seen or felt from an earthquake.
400
How do I find the origin time of an earthquake?
Subtract the P-wave travel time from the P-wave arrival time
400
On the Mercalli Map, where would the damage from an earthquake be the greatest?
Closest to the epicenter, or at Roman Numeral V.
400
How many seismic stations does someone need in order to determine the location of the epicenter?
At least 3 seismic stations.
500
What does the Earth experience due to sea floor spreading AND why?
Magnetic pole reversal because of iron (magnetic materials) found in magma moving apart as the sea floor spreads.
500
What is used to measure the INTENSITY of an earthquake?
The Mercalli Scale
500
What is the term for the area of Earth in which no waves are felt or received from an earthquake's epicenter?
The Shadow Zone
500
According to the cross section, which characteristic of seismic waves has enabled scientists to determine that the Moon has a layered interior?
Both P- and S-waves bend as they pass through different materials.
500
Name 3 hot spots around the world.
Hawaii Hot Spot, Tasman Hot Spot, Yellowstone Hot Spot, Galapagos Hot Spot, Easter Island Hot Spot, Bouvet Hot Spot, St. Helena Hot Spot, Canary Islands Hot Spot, Iceland Hot Spot.