What is Seismology? What is an Seismologist?
Any trembling or shaking of the earth's crust is
What is an earthquake?
created when trapped

What is Volcanic Ash?
What is a Cinder Cone Volcano?
Is quite thin compared to the other layers
What is earth's Crust?
The study of the earth is called ______________; the scientist who studies earth's structure are called ______________.
What is geology?
What is an geologist?
The strength of an earthquake
What is Magnitude?
Magma that has reached the earth's surafce
What is lava?

What is Lava?
formed by alternating layers of tephra and lava
What is a Composite Volcano?
Portion of the earth that is made of solid rock
What is weathering?
point underground where an earthquake begins
What is a focus?
created when trapped gases blasts through the earths surface
What is a vent?

What is a Magma Chamber?
Earth layer that is composed up of metals rather than rock
What is the earth's Core?
Define the Moho Discontinuity.
Boundary between earth's crust and its mantle
the place at ground level directly above the focus
What is an epicenter?
Runs along the edge of the Pacific Ocean and is an known location where many volcanoes erupt
What is the Ring of Fire?

What is a Vent?
A volcano that produces lava fountains or fire curtains
What is a Hawaiian Volcano?
the outer core is __________ and the inner core is ______________
liquid; solid
Describe Mid-Oceanic ridges? What is it responsible for?
Underwater mountain ranges responsible for pushing earth's crustal plates further away from each other
Define fault
a break that appears at the boundary of two moving masses of rock
What are fumaroles?

What is a Crater?
A Volcano characterized by hot clouds of gas and dust that it expels
What is a Plinian Volcano?
layers and is made up of hot, flowing rock that causes tectonic plates to move
What is the mantle?