Waves begin to feel bottom when the water depth:
a. is 2 meters.
b. becomes half the distance between wave crests.
c. equals twice the wave height.
d. is twice the wave steepness.
e. is half the wave velocity.
B
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Freezing rain is likely to occur in this sequence when a warm front passes
A) freezing rain, snow, rain, sleet. B) rain, freezing rain, sleet, snow. C) snow, freezing rain, rain, sleet. D) snow, sleet, freezing rain, rain.
Which does not have an effect on water's density?
a. Temperature b. Pressure c. Viscosity d. Salinity
Silica is a term for oxygen combined with silicon.
Answer the following statement true (T) or false (F)
What is parallax?
A. The apparent shift in position of an object caused by a change in the observer's position. B. The shift in angular position of an object as the object actually moves in space. C. The distance to an object, measured in parsecs. D. The difference between the apparent and absolute magnitude.