Explain why a floating object moves slowly in the direction of wave movement
What will be an ideal response?
Since the source of the wave energy is the wind blowing across the ocean surface, the amount of wave motion decreases downward from the surface. When a wave passes, the rising-and-forward-moving part of the circular motion imparted to the water is closer to the surface than the sinking-and-backward-moving part of the motion. This results in a floating object moving forward a small amount in the direction of wave movement.
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How does Europe compare in size (area) to the United States?
A) It is the same size as the United States.
B) It is about the size of the state of Texas.
C) It is equal in size to the continental United States plus Alaska and Hawaii.
D) It is the largest continent on the planet, far larger than the United States.
E) It is roughly two-thirds of the United States.
Which is better for you: a drug that is a natural product or one that is synthetic?
A. Synthetic products are generally better for you because they lack impurities that could bring on side effects. B. Drugs extracted from natural products are invariably better for you. C. Drugs extracted from natural products are better except in the case where the synthetic drug is a replica of the drug found in nature. D. Whether a drug is good for you does not depend upon whether the drug occurs naturally or was synthesized in the laboratory.
Price inelasticity is when ________ while price elasticity is when ________.
A. Consumers buy a product regardless of cost; the supply/demand curve is followed B. Prices cannot be negotiated; consumers can negotiate a price C. The supply/demand curve is followed; consumers buy a product regardless of cost D. Prices change frequently; prices are relatively stable E. Consumers can negotiate a price; prices cannot be negotiated
If a mineral is opaque, lustrous, malleable, and can conduct heat and electricity, it is a(n) ________
A) crystal B) element C) metal D) radioactive element E) gemstone