Diamond can cut through quartz. What does this suggest?
A) Quartz is very weak.
B) Diamond is very strong.
C) Quartz is somewhat weak and diamond is somewhat strong.
D) Both are very weak but diamond is only a bit strong.
Answer: B
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A 10-N block and a 1-N block lie on a horizontal frictionless table. To push them with equal acceleration, we would have to push with
A) equal forces on each block. B) 10 times as much force on the heavier block. C) 10 squared or 100 times as much force on the heavier block. D) one-tenth as much force on the heavier block. E) none of the above
The hydrogen bonds of water molecules account for which of the following?
A) Water can cause surface tension and wetting. B) Water has a long residence time in the atmosphere. C) Water has a low boiling point. D) Water has a low heat capacity.
The stream whose geometry has been laid down on a rock structure and is not controlled by the structure is called:
a. superposed stream b. antecedent stream c. braided stream d. resistant stream
How and why do ecologists use GIS software?
What will be an ideal response?