Volcanoes
Opening on a volcano where magma is ejected.
Vent
Instrument used to detect and time earthquake activity.
Seismograph
A form of mechanical weathering that occurs when rocks rub against each other.
Abrasion
Ice formations called ____, erode huge amounts of all kinds of sediment and rocks.
Glaciers
This lies underneath all of the soil horizons; this greatly influences the texture of the soil above it.
Bedrock
This volcano shape characterized by gradually sloping sides.
Shield Volcano
A type of fault where as rocks move apart, a section of rock may fall between the separating rocks.
Normal Fault
Garden tools being destroyed by rust is an example of what kind of chemical weathering.
Oxidation
These storms occur when the wind blows small, loose particles such as clay and silt up high into the sky.
Duststorms
Fastest and most dangerous types of mass movement.
Mudflow
Volcanic eruption that is marked by pyroclastic flow.
Pelean
Point directly above the focus of an earthquake.
Epicenter
Icicle-like structures that hang from the ceilings of caves.
Stalactites
The biggest delta in the United States.
Mississippi River Delta
Where there are weaknesses in the bedrock, a glacier can pull a huge piece of bedrock loose and carry it along in a process called ___.
Plucking
Submarine eruptions are how much more common than above ground eruptions?
20x
Slowest moving body wave; cannot travel through liquid materials in the earth.
S waves
Shallow areas of water near the coast.
Shoal
When wind blows, picks up loose sediment, and carries it away.
Deflation
When stalactites and stalagmites grow together, they form ___.
Columns
A volcanic eruption that flows through a side vent.
Flank Eruption
What are the two types of surface waves?
Love and Rayleigh Waves
Caves and caverns are fomed by what main type of weathering.
Chemical Weathering
As a glacier melts, it deposits the soil and rock it picked up on the way down the mountain into piles called ___.
The sediment that a stream carries.
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