General Knowledge

Question
A mass of liquid of partially solidified rock that is ejected from a volcano
Answer
Bomb

Question
A flow involving movement of broken rock, with little sand or mud, and particle-particle contact; usually developed in gravel or sand
Answer
Grain Flow

Question
Relatively slow movement of land, typically at rates of cm/yr
Answer
Subsidence

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
The time between seismic waves
Answer
Period

Question
Extremely rapid downslope movement of large volumes of rock and debris
Answer
Sturzstrom

Question
Used to measure earthquakes
Answer
Seismograph