Three seismograms for a single earthquake with an epicenter in Columbia are shown below. The data are from stations that were at very different distances from the epicenter. Arrows denote arrival of P and S waves. Note: Vertical scales are not all the same. 
Place the seismograms in order based on their distance from the epicenter, closest to farthest away.
A. B, C, A
B. A, C, B
C. A, B, C
D. C, B, A
Answer: B
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Worldwide, the number of permanent high-level radioactive waste disposal sites is
A. 32. B. 15. C. 6. D. 0.
What was the primary reason Europeans were proponents of the slave trade?
A) Africans were thought of as little more than chattel. B) Enslaved people compensated for the labor shortages in the New World brought on by annihilation of Native Americans. C) Slavery was an outgrowth of the Industrial Revolution, and workers were needed for factories. D) European traders sailing to the Americas needed any possible cargo they could find, and slavery was the most profitable solution. E) Cities in the New World needed to be populated, and too few Europeans were voluntarily leaving for the colonies.
A ____________________ is an instrument used to measure atmospheric pressure
Fill in the blank(s) with correct word
What would fossil ages from the geologic timescale and an isotopic age on the granite tell us about the age of the unconformity?
A. It is not possible to have fossils preserved so close to granite. B. The unconformity is older than the age assigned to the fossils. C. The granite is younger than the unconformity. D. The unconformity is older than the isotopic age of the granite. E. None of these choices are correct.