Which of the following is not a type of pyroclastic material?
A. volcanic ash
B. volcanic cinders
C. flowing lava
D. volcanic bombs
Answer: C
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When 
Po emits a beta particle, it transforms into a new element. What are the atomic number and atomic mass of this new element?
A. atomic number = 85; atomic mass = 218 B. atomic number = 86; atomic mass = 214 C. atomic number = 82; atomic mass = 214 D. atomic number = 84; atomic mass = 219
Composite volcanoes consist almost completely of lava flows
Indicate whether the statement is true or false
Rocks with flat, wind-abraded surfaces are called
A. pediments B. ventifacts C. bajadas D. none of the preceding
An organism's biotic potential is the maximum number of offspring that ________.
A. survive to adulthood B. It produces at one time C. Its habitat can support D. It actually produces over its lifetime