5 Written Questions
5 Matching Questions
- Capillary waves
- Ebb Current
- a Horizontal distance between two consecutive wave crests or wave troughs
- b Water rushing out of an enclosed harbor or bay because of the fall in sea level as a tide trough approaches.
- c Circular flow pattern of water caused by deflection of water by continents and the ocean basin.
- d The slowest moving waves.
- e These tides occur when the earth, moon and sun are in a straight line.
5 Multiple Choice Questions
- The reference level (0.0) from which tidal height is measured.
- Countercurrents beneath surface currents. Can influence conditions at the ocean surface.
- a wave in which water oscillates without causing progressive wave forward movement. there is no net transmission of energy in a standing wave
- Currents flowing on surface in opposite direction to main currents.
- Maximum ratio of wave height to wavelength seen in the open ocean. Also known as wave steepness.
5 True/False Questions
High Tides → Low water position corresponding to a tidal trough
Surf beat → A result of constructive and destructive interference that is seen on shore when waves do not all appear with a uniform size. Some are larger, some are smaller.
Transverse → Eddies do not tend to form in these boundary currents.
Wave Trains → Progessing groups of swell with the same origin and wave length are known as this.
Amphidromic Point → A "no-tide" point in an ocean caused by basin resonances, friction, and other factors around which tide crests rotate. About a dozen amphidromic points exist in the world ocean. Sometimes called a node.