Earthquakes, Dangerous?
The Tohoku Earthquake
Myles Venier
Greg Tousignant
Mrs. Smith
April 8, 2011
This quake occurred at :

This quake occurred

The magnitude of this quake was
Basic Background Information
Effects on the environment/earth
How are earthquakes measured?
A seismograph combines a seismometer
with recording equipment to obtain a permanent record of the motion.
What does magnitude mean? The great size or extent of something.
How is magnitude measured? magnitude is measured
normally on the Richter scale.
external image moz-screenshot.pngexternal image moz-screenshot-1.pngjapan-earthquake.jpg
Damage Caused by Earthquakes
Effects on the People of Japan
The most powerful earthquake in Japan's recorded history hit the country's northeast coast on Friday,
in the wake of the storm, thousands of people dead, injured, and missing.
There is almost 13,000 dead, 6,000 injured, and 15,000 missing.
Effects on the Economy of Japan
What are earthquake waves called?
Earthquake waves are called seismic waves.

What two types of seismic waves are there?
The two types of seismic waves are body and surface waves.

What two types of body waves are there?
P and S waves.

Body Waves
GPS Sensors
How do P waves travel?
P waves travel faster and through both solid and liquid.

How do S waves travel?
S waves are slower and go through only solid.

Which move faster?
P waves move faster.
One interesting fact about this earthquake is that it moved
several GPS sensors.

This will require

How does elastic rebound explain this movement?
Elastic Rebound

In what type of plate boundary does
elastic rebound occur?
What is a tsunami?

How do tsunami waves appear at sea?

How high can tsunami waves be?

How fast can tsunami waves move?
Sources Used