Earthquakes
Earthquake Waves
How are Earthquakes Measured
How to Prepare
Vocabulary
100
What is a sudden movement in Earth's crust?
What is an earthquake
100
What waves do the slowest, do the most damage and moves like ripples on a pond on the top of the earth's crust?
What is the surface or Lg-waves
100
What is the scale that is used to measure an earthquake?
What is the Richter scale
100
What should people do with big loose objects?
What is secure them so them so they don't fall
100
What is a crack in Earth's surface?
What is a fault
200
Where does an Earthquake happen?
What is the fault
200
What waves are half as fast and pass through only solid layers.
What is the secondary or s-waves
200
What is the scale that is used to measure an earthquake by how much damage is done?
What is a Mercalli scale
200
Where is a safe place to take safety during an earthquake?
What is a strong table
200
What is a large wave caused by an underground earthquake?
What is a tsunami
300
What is the place along a fault where the slipping begins and causes an earthquake?
What is the focus
300
What waves move back and forth and goes through both solid and liquid layers?
What is primary or p-waves
300
Scientist use this to measure and detect earthquake waves.
What is a seisometer
300
Where should you seek shelter during a tsunami
What is high ground
300
Earthquakes happen at faults near this?
What are plate tectonics
400
What is the point where the waves of energy are felt directly above the focus?
What is the epicenter
400
How big does an the magnitude from an earthquake have to be to cause a tsunami?
What is 6.5 or greater
400
This is sent out during an earthquake when the plates move.
What is energy
400
What are some signs in California that an earth might occur?
What are bulges or changes in the angles of the ground
400
Earthquakes cannot be what?
What is predicted
500
What is the wave of energy that an earthquakes releases?
What is magnitude
500
This is has less magnitude and but can do more damage.
What is an aftershock
500
How many seismometers need to be used to pinpoint an earthquake?
What is 3
500
What is placed between a building and its foundations to help reduce damage?
What is rubber
500
Why do we use a Japanese word to describe a tsunami?
What is Japan has many earthquakes because they are on plate boundaries.
M
e
n
u