Natural Disasters

Question
A mass of cold, solid rock ejected from a volcano
Answer
Block

Question
Fine materials (dust, ash, and cinders) produced by volcanic action
Answer
Tephra

Question
An elevation that a stream cannot erode past, controlled by level of the body of water which the stream discharges into
Answer
Base Level

Question
A landslide that moves along a regular sloping planar surface
Answer
Translational Slide

Question
Mineral composed of potassium chloride, a salt used in manufacturing fertilizer
Answer
Sylvite

Question
Mineral or rock composed of sodium chloride; susceptible to dissolution
Answer
Halite

Question
An event involving a significant number of people and/or significant economic damage
Answer
Disaster

Question
The deepest parts of the channel along the length of the stream bed
Answer
Thalweg

Question
Lenses of pure ice developed in permafrost sediment
Answer
Segregated Ice

Question
An abnormally long wavelength wave produced by sudden displacement of water
Answer
Tsunami