Volcanoes
A volcano that has seismic activity and has erupted in the past is this type of volcano.
What is active?
The point on the earth's surface directly above the focus of the earthquake.
What is the epicenter?
This comes after an earthquake.
What is an aftershock?
The only part of the earth that has been directly studied.
What is the crust?
These types of mountains are formed when the edges of two tectonic plates are pushed together.
What are folded mountains?
What is magma?
Any volcano that could possibly erupt again is known as this.
What is dormant?
The point within the earth where the earthquake begins.
What is the hypocenter?
Where 80% of earthquakes occur.
What is the circum-Pacific belt?
More than half of the world's volcanoes are located here.
What is the Ring of Fire?
This type of mountain is formed when molten rock erupts from the earth.
What are volcanic mountains?
What is geology?
Liquid that is emitted from a volcano.
What is lava?
How long even the biggest earthquake lasts.
What is one minute?
The fastest moving earthquake waves.
What are Primary waves?
Scientists believe that this is the density of the inner core.
What is solid?
When the earth bends or buckles folds are formed that create archlike structures called this.
What are anticline folds?
A weak earthquake
What is a tremor?
An opening in the earth's surface where hot gases escape.
What is a volcano?
Seismologists study and record earthquake's vibrations on this device.
What is a seismograph?
The earthquake waves that cause the most damage.
What are surface waves?
**** DOUBLE JEOPARDY***
This is formed when a layer of rocks break and move because of the forces that have been placed upon it.
What is a fault?
When the earth bends or buckles, folds are formed that bend down.
What are syncline folds?
Another name for the Circum-Pacific belt.
What is the Ring of Fire?
Any substance emitted from a volcano.
What is ejecta?
The study of earthquakes
What is seismology?
The eight tectonic plates float on the upper mantle and form this.
The three major forms of faults
What are strike-slip, thrust, and normal?
This volcanic mountain in Washington once erupted and ash from it was found several states away.
What is Mt. St. Helens?
Everything we know about what lies beneath the crust comes from the study of these.
What are seismic waves?