Basaltic lava flows that are charged with little steam and crystallize before reaching the surface are called ____ lava
a. ?pahoehoe
b. ?maar
c. ?aa
d. ?lahar
e. ?pumice
ANSWER: c
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Which of the following statements is TRUE regarding the population pyramids of China and Japan?
A) Japan faces a critical shortage of young people in future generations.
B) Japan is growing faster than China.
C) Japan and China both have high birth rates.
D) Both Japan and China exhibit high growth.
E) Japan has a younger population than China.
A globe is a better model of the Earth than a flat map
Indicate whether the statement is true or false.
Uranium-238 (U-238) that undergoes alpha decay becomes ____
a. Th-232 b. Th-234 c. Pa-234 d. Pu-242 e. U-234
In a given area where you have little knowledge of the local geology (rocks types, fossils, etc.), what type of unconformity would be the most difficult to recognize in an exposed sequence of rocks? Why?
What will be an ideal response?