Earthquakes
Vibrations of energy that flow from the focus of an earthquake are called
What are seismic waves?
Breaks in the earth's surface along which rock can move are called?
What are faults?
Magma when it break the earth surface is called
What is lava?
An active volcano is
What is a volcano that has recently erupted and is expected to erupt again?
The strength of seismic wave is called
What is magnitude?
The point where an earthquake begins and the point directly above it
What is the focus and epicenter?
Fast-moving waves that occur beneath the surface of the earth are called....
Waves that travel along the Earth's surface and can cause significant damage are....
What are body waves?
What are surface waves?
A hot spot is
What is an area where magma from deep within the mantle melts through the crust?
Type of volcano that is commonly pictured and is large, symmetrical, cone shaped with steep sides.
Composite cone volcano
The area around the Pacific Ocean where many volcanoes occur is called
An earthquake's magnitude is measured by
What is the Richter Scale?
Type of fault occurs when rocks push together, forcing a section of rock upward
What is thrust or reverse fault?
Volcanic gases are called
What is vog?
The difference between a dormant and extinct volcano is
What is...
- a dormant has erupted, but isn't expected to erupt again
- an extinct has no evidence of erupting in the past and isn't expected to erupt in the future
The type of volcano scientists are likely to study is
What is an extinct volcano?
The idea that the earth's crust is made up of moving plates is called
What is the theory of plate tectonics?
Detects, times, and measures the movement of the earth
What is a seismograph?
A danger caused by a volcano that occurs when part of a mount collapses, causing mud and rock fragments to surge down the mountain
What is debris flow?
Large, gradually sloping volcano that has mild eruptions and continuous lava flow
What is a shield volcano?
Some volcanoes have more than one kind of eruption because
What is the conditions of the inside of the volcano change after an eruption?
One cause of an earthquake is
What is the buildup and release of energy when two surface plates move or shift against each other.
Name two types of body waves and surface waves
Body: What is a P wave and a S wave?
Surface: What is a Love wave and Rayleigh wave?
Heated magma rising to the surface causes....
What is a volcanic eruption?
Large volcano seem to be layered, signifying that different types of lava flows have occurred in the past, but the volcano is presently inactive
What is a dormant composite cone volcano?
An avalanche-like emission of red-hot dust and gases that killed the people of Pompeii
What is pyroclastic flow?