In contrast to Aristotle's statements about nature, Galileo's reliance was on
A. patterns.
B. mathematics.
C. logic.
D. experiment.
Answer: D
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Which of the following is true about how contamination moves in groundwater?
A) Contamination moves up the slope of groundwater. B) Contamination moves opposite to the direction of groundwater flow. C) Contamination introduced into the ground does not move. D) Contamination spreads out as it moves, forming a widening plume.
Diethyl ether can be made from ethanol. The reaction is: 2 C2H5OH(l) ? (C2H5)2O(l) + H2O(l) In one experiment 46.0 g of ethanol yielded 34.7 g of diethyl ether. What was the percent yield in this experiment?
A) 62.1% B) 80.4% C) 93.8% D) 97.0%
What is the driving mechanism for plate tectonics?
a. heat deep within the Earth b. tidal forces caused by the moon c. volcanoes and earthquakes at plate boundaries d. a little man with a steering wheel in Tierra del Fuego e. none of these
Between 1942 and 1964, 4.6 million temporary work permits were issued to Mexicans so they could participate in a guest worker program in the United States. This program was called:
A) Temporary Worker Program B) Braceros Program C) Maquiladora Program D) NAFTA E) REDD