QUIZ 4 Answers
Quiz 3 - Quiz 4 - Home

1. Tide = the vertical RISE and FALL of the ocean water.

2. Tidal Range = diffenrence between successive HIGH and LOW tides

3. Spring tides occur when it is NEW moon and FULL moon.
   Spring tides have a BIG tidal range.
   In Darwin that can be up to 7+ METERS.

4. Neap tides occur when it is QUARTER moon and THREE QUARTER moon.
   Neap tides have a SMALL tidal range.
   In Darwin that can be is little as 1 METER.

5. Spring tides and Neap tides occur SEVEN days after each other.

6. Incoming tide ("flow") = when the water is RISING.

7. Outgoing tide ("ebb") = when the water is FALLING.

8. Each day High tide and Low tide occur SIX hours after each other.
   So in Darwin there are 2 high tides and 2 low tides each day. (This is called semi-diurnal)

9. When the tidal flow and wind are in the same direction you have a SMOOTH ride in the boat.

10. When the tidal flow and wind are the oppositie direction you have a BUMPY ride in the boat.

11. In order to allow for the tides put out THREE times as much anchor rope than the depth of water below the boat.
    So when the water is 10 meters deep, put out 10 x 3 = 30 meters of anchor rope.