Show:
Red
Blue
Green
Yellow
Orange
100
stress
What is a force that acts on rock to change its shape or volume?
100
P wave
What is the first type of seismic wave to arrive at a seismograph?
100
an upward fold in the Earth's crust. (arch)
What is an anticline?
100
A fault
What is a break in the crust where rocks slip past each other?
100
the focus
What is the point beneath Earth's surface where the crust breaks and triggers an earthquake?
200
tension
What is a force that pulls on the crust and stretches rock?
200
an instrument that is used to measure and record ground movements during an earthquake
What is a seismograph?
200
the hanging wall moves up
What is a reverse fault?
200
the hanging wall moves down
What is a normal fault?
200
Shearing
What is the type of stress that produces a strike-slip fault?
300
a process that occurs when an earthquake's shaking turns loose soil in to mud
What is liquefaction?
300
compression, tension, and shearing
What are 3 types of stress that cause changes in the crust?
300
Water is displaced by an undersea earthquake.
How does a tsunami occur?
300
A large area of flat land that is elevated above sea level.
What is a plateau?
300
The point on Earth's surface directly above an earthquake's focus.
What is an epicenter?
400
P waves, S waves, and Surface waves.
What is the order that waves arrive at a seismograph?
400
The Moment Magnitude Scale.
What is a rating system that estimates the total energy released by an earthquake?
400
It is designed to reduce the amount of energy that reaches the building during an earthquake.
Why is a base-isolated building made?
400
A downward fold in Earth's crust. (Sync)
What is a syncline?
400
A type of stress that squeezes rock until it folds.
What is compression?
500
Shearing
What is a stress that pushes rock in two opposite directions?
500
Liquefatcion Aftershocks Shaking Tsunami
What are the 4 types of damage earthquakes can cause?
500
They are ways to determine earthquake risk
What do past earthquakes, location of active faults and areas with the most damage have in common?
500
magnitude
What is the number that geologists assign to an earthquake based on its size?