Plate Boundaries and Stress
The type of plate boundary where two plates slide past each other.
The name for a crack or break in the crust.
What is a fault?
Earthquakes are ultimately caused by this activity.
The name for the scale that measures earthquakes based on the strength of their seismic waves?
The name for smaller earthquakes that follow an initial earthquake due to continued movement of rock under the surface.
What are aftershocks?
The type of plate boundary where two plates move toward each other.
What is a convergent boundary?
The two parts of a fault.
What are the hanging wall and the footwall?
The point under the ground at which rock breaks, leading to an earthquake.
What is the focus?
The name for the device that records seismic waves by hanging a weighted pen above a rotating drum of paper.
What is a seismograph?
The name for the process where the shaking of the Earth during an earthquake causes water and soil to mix into mud.
What is liquefaction?
The kind of plate movement you find at a divergent boundary.
What is two plates moving away from each other?
At this kind of fault, the hanging wall slides up relative to the footwall.
What is a reverse fault?
The name for the type of energy released by the breaking of rock under the surface.
What is a seismic wave?
The name for the strip of paper with seismic wave markings on it produced by a seismograph.
What is a seismogram?
The name for the large waves produced by earthquakes that occur on or near the surface of the ocean.
What are tsunamis?
The type of stress found at a convergent boundary, it folds and squeezes the crust.
What is compression?
This type of fault is produced by shearing at a transform boudnary.
What is a strike-slip fault?
The name for the type of seismic wave that reaches the surface first. It moves back-and-forth and compresses the ground.
What is a Primary wave?
Mr. Nolan is going to draw a picture of a seismogram on the board. There are three zones on the seismogram. This type of seismic wave is represented in the second zone.
What are Secondary Waves?
The best shape for building an earthquake-resistant structure.
What are triangles?
The type of stress found at a divergent boundary, it stretches and thins the crust.
This type of fault produces landforms such as rift valleys or mid-ocean ridges.
What is a normal fault?
The name for the type of seismic wave that moves back-and-forth and up-and-down.
What is a Surface Wave?
The location for the largest earthquake ever recorded on the Richter Scale.
This feature of earthquake-resistant structures absorbs the vibrations from seismic waves to reduce the impact of shaking on the building.
What is a damper?