As sediment travels in a downstream river, it changes by getting
A) coarser.
B) finer.
C) more poorly sorted.
D) more angular.
Answer: B
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Which is the correct order of the planets, moving from closest to the Sun to farthest from the Sun?
a. Mercury, Venus, Earth, Saturn, Mars, Jupiter, Neptune, Uranus b. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune c. Venus, Mercury, Mars, Earth, Saturn, Jupiter, Neptune, Uranus d. Mars, Venus, Earth, Mercury, Jupiter, Saturn, Uranus, Neptune e. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Neptune, Uranus
Do explosions conserve momentum?
A. No, because objects can go from stationary to moving. B. Only for rockets. C. Only if the original object is stationary. D. Yes, because all forces are internal to the system.
Suppose a photon has a frequency of 300 million hertz (300 megahertz). What is its wavelength?
A) 1 meter B) 1/300,000 meter C) 300 million meters D) A photon's wavelength cannot be determined from its frequency.
When two or more resistors are connected in series to a battery
A) the total voltage across the combination is the algebraic sum of the voltages across the individual resistors. B) the same current flows through each resistor. C) the equivalent resistance of the combination is equal to the sum of the resistances of each resistor. D) all of the given answers E) none of the given answers