What type of eruption is shown in this photograph?
A. lava fountain
B. pyroclastic column
C. lava flow
D. pyroclastic flow
E. lava dome
Answer: C
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A 100-N falling object encounters 100 N of air resistance. The net force on it is
A. 100 N. B. 40 N. C. 60 N. D. 0 N.
The fault displacement from the 2011 Tohoku-Oki, Japan earthquake was the largest ever recorded. Indicate whether the statement is true or false
Which of the following is (are) true for an evolutionary diagram?
A. Shows the progression of changes an area undergoes through time. B. May use block diagrams, cross sections, or maps. C. Uses a sequence of geologic diagrams to depict the geologic history of an area. D. All of these choices are correct.
Radioactive materials can be eliminated from the environment using certain types of plants, such as sunflowers.
Answer the following statement true (T) or false (F)