Show:
Forces in Earth's Crust
Earthquakes and Seismic Waves
Monitoring Earthquakes
Earthquake Safety
Misc.
100
Name the 3 types of stress.
Compression, shearing, and tension.
100
Name the 3 types of waves.
P waves (primary waves), S waves (secondary waves), and surface waves.
100
This is used to seismic waves.
What is a seismograph.
100
Name 3 ways you can protect yourself during or before an earthquake.
Strap the water heater to the wall, use metal connectors to strengthen the house's frame, bolt the house to its concrete foundation, use plywood panels to strengthen the walls, fasten bookshelves/cabinets/tall dressers to wall studs, remove heavy items from the walls above beds, move bed away from windows, secure brick chimneys with metal brackets and plywood, cover head and neck, put together an emergency kit.
100
Faults occur along what?
Plate boundaries.
200
This fault has the hanging wall go down.
What is normal fault.
200
These waves push and pull.
What is P waves or primary waves.
200
On a seismograph the biggest zig-zags show this type of wave.
What is surface waves.
200
Geologists use these 3 ideas to figure out earthquake risk.
Locate where faults are active, look at where past earthquakes have happened, and look to see where the most damage was caused.
200
Name 4 landforms that forces of plate movement can change flat plains into.
Anticlines, synclines, folded mountains, fault-block mountains, and plateaus.
300
This fault has compression involved.
What is reverse fault.
300
To find the epicenter of an earthquake how many seismographs are used?
3
300
This fault monitoring device uses water to measure the vertical movement of a fault.
What is tilt meter.
300
This suddenly turns loose, soft soil into liquid mud.
What is liquefaction.
300
The focus happens in the layers of Earth, what is it called at the surface?
Epicenter.
400
A fold in rock that bends upward into an arch.
What is anticline.
400
This is the scale that rates the intensity of an earthquake.
What is Mercalli Scale
400
Name the 4 types of fault monitoring devices.
Creep meter, tiltmeter, laser-ranging devices, and GPS satellites.
400
These can happen hours, days, or even months later.
What is aftershocks.
400
What do the fault monitoring devices measure?
Changes in elevation, tilting of the land surface, and ground movements along faults.
500
Describe the following in 4 different ways. --> <-- <-- --> <-- -->
1. Compression, reverse fault, colliding boundary, and convergent boundary. 2. Tension, normal fault, spreading boundary, and divergent boundary. 3. Shearing, strike-slip fault, sliding boundary, and transform boundary.
500
New reports say they are using the Richter scale, but they are really using this scale.
What is the Moment Magnitude scale.
500
We use seismographs and fault-monitoring devices to do what 3 things.
Map faults, monitor changes along faults, and predict earthquakes.
500
Describe the process of a tsunami.
A small wave forms above the epicenter. The wave gets bigger and bigger as it approaches the land. It causes great loss of life and destruction.
500
What are the causes of earthquake damage?
Shaking, liquéfaction, aftershocks, and tsunamis.