Is the rate of Earth's rotation increasing or decreasing?

A. It is increasing.
B. It is remaining relatively steady.
C. It is decreasing.
D. It is increasing and decreasing in cyclic fashion.


Answer: C

Environmental & Atmospheric Sciences

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For what reason might the nuclei of atoms break apart in radioactivity?

A) There are too many neutrons in the nucleus. B) Electrons are being shared by two adjacent atoms. C) Forces that bind protons and neutrons together are weak. D) Protons are being exchanged between atoms.

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Which structures would interfere with longshore drift?

A. groins B. breakwaters C. jetties D. All of these choices are correct.

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Regular patterns of smooth, rounded waves are called

A) wave ripples. B) swells. C) wave trains. D) breakers. E) tidal bulges.

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What is the main tenet of Plank's quantum hypothesis?

A) Energy comes in discrete packets of a certain minimum size. B) Energy is composed of subatomic particles called quanta. C) Energy is a continuum, but light is quantized. D) Energy can be converted into matter through nuclear quanta. E) Light is composed of waves that exist only at certain quantum fundamental frequencies.

Environmental & Atmospheric Sciences