5 Written Questions
5 Matching Questions
- Wave diffraction
- Lunar Day
- a Wave generated as a result of a seismic event.
- b Bending of waves around obstacles.
- c 24 hours 50 mins
- d Uninterupted distance over which the wind blows without significant change in direction.
- e Maximum ratio of wave height to wavelength seen in the open ocean. Also known as wave steepness.
5 Multiple Choice Questions
- In these boundary currents, the flow is from East to West or West to East. They link eastern and western boundary currents.
- These waves travel though water deeper than 1/20 but shallower than 1/2 their wavelength
- Which direction do gyres flow in the Northern hemisphere?
- These boundary currents move warm water from the equator towards the poles.
- Nearly friction free transfer of energy from molecule to molecule in a circular path.
5 True/False Questions
Shallow → mature wind waves of one wavelength that form orderly undulations of the ocean surface
Wave refraction → The reflection of progressive waves by a vertical barrier. Reflection occurs with little loss of energy.
Wind → Surface currents are powered by the sun and ______________
Wave reflection → Slowing and bending of progressive waves in shallow water.
Deep → These tides result in little variation in the height of tides.