Question
The deepest parts of the channel along the length of the stream bed
Answer
Thalweg
Natural Disasters
Lenses of pure ice developed in permafrost sediment
Question
Lenses of pure ice developed in permafrost sediment
Answer
Segregated Ice
An abnormally long wavelength wave produced by sudden displacement of water
Question
An abnormally long wavelength wave produced by sudden displacement of water
Answer
Tsunami
Topographic line or boundary separating watersheds
Question
Topographic line or boundary separating watersheds
Answer
Drainage Divide
Formed on the ceiling of a cavern when water percolates through fractures in limestone
Question
Formed on the ceiling of a cavern when water percolates through fractures in limestone
Answer
Stalactite
Slope of the river channel; typically decreases downstream
Question
Slope of the river channel; typically decreases downstream
Answer
Gradient
A large steep-sided volcano consisting of layers of ash, fragmental debris and lava
Question
A large steep-sided volcano consisting of layers of ash, fragmental debris and lava
Answer
Stratovolcanoes
A mudflow associated with volcanic action or involving volcanic materials
Question
A mudflow associated with volcanic action or involving volcanic materials
Answer
Lahar
The amount the fault or ridge moves away from its point of origin (aka displacement)
Question
The amount the fault or ridge moves away from its point of origin (aka displacement)
Answer
Offset
Component of stress perpendicular to the earth’s planar surface (force keeping the boulder/grain from moving)
Question
Component of stress perpendicular to the earth’s planar surface (force keeping the boulder/grain from moving)
Answer
Normal Stress