Earthquakes
Which state in the US has the most amount of earthquakes?
Alaska
The Ring of Fire outlines:
The Pacific Plate
Which of the following is located on earth's surface: focus or epicenter?
Epicenter
What is the most important factor for predicting volcanoes?
Past data
Earthquakes are most likely to occur near:
The edge of a plate
Which of the following countries is not on the Ring of Fire: United States, Egypt, Japan or Ecuador?
Egypt
How many seismic locations do you need to determine the epicenter of an earthquake?
3
What types of technology do scientists use to determine when a volcano might erupt?
Satellites and Seismometers
Earthquakes occur when __?__ builds up.
Stress
Where did the most powerful earthquake in the world occur?
Chile
How long is the Ring of Fire?
25,000 miles
Which waves arrive first: P-waves, S-waves or surface waves?
P Waves
Events that come before a volcanic eruption are known as:
Precursors
The most powerful earthquake ever recorded had a magnitude of:
9.5
Which state experienced an earthquake that was extremely powerful, but appears as though it should not have?
Missouri
75%
What type of waves are most destructive?
Surface waves
What are volcanic mudflows also known as?
Lahars
The most powerful earthquake in the US occurred in:
Alaska
What is the scale that earthquakes are measured on called?
Richter Scale
What percent of the world's earthquakes occur on the Ring of Fire?
90%
What is used to deteremine the magnitude of an earthquake?
The Richter Nomogram
What is the name of the most closely watched volcano on the planet?
Mount St. Helens
The volcano that recently erupted in Hawaii is named:
Kilauea