Show:
Volcanoes and Plates
Parts of a Volcano
Eruptions
Vocabulary
Earthquakes
100
area around the Pacific Ocean that includes many volcanoes
What is the Ring of Fire?
100
The long tube that connects the magma below the crust to the top of the volcano
What is the Pipe?
100
This is what causes magma to be pushed out of a volcano
What is Gases?
100
magma that reaches Earth's surface
What is Lava?
100
Type of stress that pushes rocks together
What is Compression?
200
Volcanoes can form when two plates pull apart at this type of boundary
What is Divergent?
200
The pocket of molten material beneath a volcano
What is a Magma Chamber?
200

Viscosity refers to .........

Refers to how fast a fluid will flow or move. (Ex honey , water, milk)

200
A hole created when a volcano collapses inward
What is a Caldera?
200

The area on the crust where an earthquake is initially felt 

What is the epicenter

300
This is an area, not on a plate boundary, where magma makes its way to the surface
What is a Hot Spot?
300
The bowl shaped top of a volcano
What is a Crater?
300
Large pieces of rock that explode out of a volcano
What are Bombs?
300

How fast can pyroclastic flow move?

100 mph

300
The area beneath Earth's surface where an earthquake occurs
What is the Focus?
400
When two plates collide to form volcanoes, one is pushed under which is known as ___________________
What is subduction?
400
The area where magma exits on the side of the volcano
What is a Side Vent?
400
A fast moving cloud of hot gases and ash
What is Pyroclastic Flow?
400
Type of volcano that forms from alternating layers of ash and lava
What is a Composite Volcano?
400
Machine that measures the strength of an Earthquake
What is a seismograph?
500

The volcanoes that are found on the Hawaiian islands are the result of this phenomenon.

What is a hot spot

500
The spread of molten material as it pour out of a vent
What is a Lava Flow?
500
This type of lava forms jagged edges when it cools slowly
What is Aa?
500

3  signs a volcanic eruption could be imminent.

1. Earthquakes at the sight of the volcano

2. Gases given off

3. Physical changes seen in the shape of the volcano and surrounding land

500
This scale rates the amount of energy released from an earthquake
What is Moment Magnitude Scale?