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Volcano Formation
Volcanic Erruptions/Features
Volcanic Hazards
Random Ch. 7
Earth Science Review
100
A volcano is a land or underwater feature that forms when _________ reaches the surface of the Earth.
What is magma
100
A ____________ volcano is a huge, gently sloping volcanic landform. Develop as layer upon layer of lava piles up.
What is shield volcano
100
A silent hazard to humans and wildlife during a volcanic erruption
What is gas emissions
100
The majority of the world's volcanoes are located in the __________.
What is Ring of Fire
100
A ______________ lists all the symbols used on the map and explains what each symbol means.
What is map legend
200
Most volcanoes form at ________________.
What is plate boundaries
200
In general, the __________ the temperature of magma, the more easily it flows.
What is higher
200
Scientists refer to a ____________ as a rapidly flowing mixture of volcanic debris and water.
What is a lahar
200
The name for the area of the volcano where the magma errupts from
What is the vent
200
________________ is the distance north or south of the equator.
What is latitude
300
Volcanoes that do not form at plate boundaries form at ______________.
What is hot spots
300
The ______________ of a material is a property that describes the material's resistance to flow.
What is viscosity
300
A fast-moving body of hot gasses and solids
What is pyroclastic material
300
Solid fragments of rock and lave that erupt from a volano
What is tephra
300
Name the 3 types of heat transfer
What is conduction, convection, radiation
400
Heat and pressure from Earth's interior cause rock to _________ and become _________.
melt and become magma
400
A ___________ volcano is composed of alternating layers of lava and tephra. They often form tall, majestic mountains.
What is composite
400
One hazard of volcanoes is the release of large amounts of fine-grained tephra called _____________.
What is volcanic ash
400
_____________ is the amount of matter that an oject has per unit of volume.
What is density
500
Volcoes that form along this type of plate boundary tend to have more violent erruptions.
What is a convergent plate boundaries
500
A _____________ is a large, usually circular depression formed when a volcano collapses.
What is a caldera
500
Name three ways to predict a volcanic eruption
What is small earthquakes, gas emissions, ground movement and temperature
500
When magma escapes from narrow, long cracks in Earth's crust, a _________ erruption occurs.
What is fissure
500
Name of 4 layers of the Earth
What is inner core, outer core, mantle and crust