5 Written questions
5 Matching questions
- Progressive Wave
- Surface Currents
- Wind Strength
- a These transfer heat from tropical to polar regions, distribute nutrients, scatter organisms and influence weather and climate.
- b A wave of moving energy in which the wave form moves in one direction along the surface of the transmission medium.
- c The length of time the wind blows, the fetch and this are three factors that affect wind wave development.
- d Horizontal distance between two consecutive wave crests or wave troughs
- e There are five of these boundary currents. They carry cold water towards the equator.
5 Multiple choice questions
- Which direction do gyres flow in the Southern hemisphere?
- Tide caused by gravitational and inertial interaction of the moon and Earth.
- These boundary currents are narrow and deep and have sharp boundaries. Eddies can form.
- Progessing groups of swell with the same origin and wave length are known as this.
- These are the fastest flowing boundary currents.
5 True/False questions
Wind → These waves tend to be less than 3m high, and have wavelengths between 60 - 150m in the ocean.
Fetch → Uninterupted distance over which the wind blows without significant change in direction.
Surging Wave → A wave that surges ashore without breaking.
Transitional → In these boundary currents, the flow is from East to West or West to East. They link eastern and western boundary currents.
Eastern → These boundary currents are shallow and broad with boundaries that are not well defined.