i want to make sure i am answering this correctly.
1) the primary source of energy for ocean currents and waves is: the sun
2)as a wave passes in deep water, water parcels move in: almost closed circular orbits
3)which of the following is not a feature of simple waves? options are: (crest , through, wavelength, surf) my answer is surf
4)which of the folowing is true of deepwater waves?(they are in water deeper than 1/2 wavelength, they are unaffected by th ebottom, wave speed is independet of water depth, all of the above) my answer is they are unaffected by the bottom.
5) waves in a generating area are not: (chaotic, choppy, smoth-crested, under the infuence of the winds that formed them)my answer under the influence of the winds that formed them
There may be some answers here.
http://www.can-do.com/uci/lessons98/Raft.html
http://science.howstuffworks.com/rogue-wave2.htm
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I am with you on one two and three but have doubts about 4 and 5
4)which of the folowing is true of deepwater waves?(they are in water deeper than 1/2 wavelength, they are unaffected by th ebottom, wave speed is independet of water depth, all of the above) my answer is they are unaffected by the bottom.
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The decay of orbital velocities is exponential with depth and indeed if the water is more than half a wavelength deep we usually consider it deep water and no effect from the bottom
HOWEVER one consequence of that is that the phase and group velocity of the wave depends only on wavelength and not on depth, so both are true.
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5) waves in a generating area are not: (chaotic, choppy, smoth-crested, under the infuence of the winds that formed them)my answer under the influence of the winds that formed them
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Surely in the generating area the waves ARE influenced by the generating winds, assuming that they are wind generated waves and not generated by a boat or tsunami or something. In my own experience new waves tend to be choppy and long waves far from the storm tend to be smooth crested.
1) Correct. The primary source of energy for ocean currents and waves is indeed the sun. Sun's heat energy drives various processes, including the evaporation of water, which leads to the formation of wind and subsequently the generation of ocean currents and waves.
2) Correct. As a wave passes in deep water, water parcels move in almost closed circular orbits. Deep water refers to water depths greater than half the wavelength of the wave. In deep water, the circular motion of water parcels is predominant, and the motion is not significantly affected by the seafloor.
3) Correct. Among the options given (crest, trough, wavelength, surf), the feature of "surf" is not typically associated with simple waves. A surf typically refers to the breaking or turbulent region of a wave near the shore, where the wave energy is dissipated.
4) Incorrect. The correct answer is "all of the above." The features stated about deepwater waves are valid. Deepwater waves are those that occur in water deeper than half the wavelength of the wave. They are unaffected by the bottom (seafloor), as the water depth is sufficient to support their motion. Additionally, the speed of deepwater waves is indeed independent of water depth.
5) Correct. Waves in a generating area are not under the influence of the winds that formed them. In the generating area, waves are initially formed and shaped by the local winds. However, as waves propagate away from the generating area, they are influenced by various factors, such as ocean currents, seafloor topography, and atmospheric conditions, rather than the specific winds that formed them.