Definitions
a smaller earthquake that occurs after a larger earthquake
What is aftershock?
How many seismographs are needed to find an epicenter?
What is 3?
Where do most earthquakes occur?
What is plate boundaries? What is 80% at the Pacific Ring of Fire?
First waves to reach a seismometer
What is P waves?
What are the three types of scales?
What are Mercalli Intensity Scale, Richter Scale, and Moment Magnitude Scale?
seismic waves that move along Earth’s surface
What is surface waves?
the energy from earthquakes
What is seismic waves?
What is a tsunami?
What is a a giant, fast-moving wave that is caused by an undersea earthquake?
The most damaging types of waves
What is surface waves?
What is the range of the Moment magnitude scale?
What is 1 - 10?
a break in Earth’s crust where movement of rock occurs
What is Fault?
What is the crest?
What is the high point of the wave?
List 3 ways you can protect yourself during an earthquake?
What is
If you are in a building, drop to the ground, get beneath a sturdy table or desk, cover your head, and hold on.
•Stay away from windows and mirrors since glass can break and fall on you. Stay away from large furniture that may fall on you.
•If the building is structurally unsound, get outside as fast as possible. Run into an open area away from buildings and power lines that may fall on you.
•If you are in a car, stay in the car and stay away from structures that might collapse like overpasses, bridges, or buildings.
can only move through solids
What is S waves?
Why is the Mercalli Intensity Scale not the best way to record the scale of earthquakes?
What is damage can be different based on the area- ex. rural vs city?
the height of a wave from the center line to its crest
What is amplitude?
What is the difference between the older and modern seismographs?
How does tsunami monitoring work?
What is use satellites to gather seismic data,tsunami sensors measure ocean level changes or less than a millimeter, and warnings are sent out for earthquakes that are 6.5 or higher?
What are the two types of body waves?
What is P and S waves?
What type of scale do seismologists currently use?
What is Moment Magnitude Scale?
the point below Earth’s surface where movement of rock produces an earthquake
If the time between the P wave and S wave is close together, the epicenter is....
What is close?
Besides earthquakes, what else can cause tsunamis?
What is landslides and volcanic eruptions?
move side-to-side, much like a snake
What is Love waves?
How many more times powerful is a 7 than a 3 on the Richter scale?
What is 10,000?