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Ocean in Motion: Tides - Quick Quiz
1. By measuring the difference between high and low tide, we can find the______?
Ebb Current
Tidal Range
Diurnal Tide
Mixed Tide
2. Semi-diurnal tides occur . . .

Once a day
Only at high tide
Twice a day
Never
3. Tides occur at the same time each day.
True
 False
4. What kind of tide occurs then the sun, moon and Earth are all in a straight line?
High
Tide
Low Tide
Neap Tide
Spring Tide
5. Only the gravitational pull of the sun is important in creating tides.
True
 False
 

Answers (for non JavaScript enable browsers):

1. Tidal Range

2. Twice a day

3. True. Because of the Moon's orbit, a tide returns about 50 minutes later each day.

4. Spring Tide

5. False. The gravitational pull of the sun and the moon are important in creating tides.