Tide Questions

1. Define a tide.

2. What is the difference between a diurnal and semi-diurnal tide?

3. What does vertical height refer to?

4. What causes tides?

5. What are factors effecting tides?

6. Compare spring and neap tides.

7. When does high tide usually occur?

8. Draw a marigram for the three types of tides.

PROBLEMS refer to table 10.2 and 10.3 p274-5

1. How many days will pass before a high tide reoccurs at the same clock time?

2. Using the info on table 10.2, plot the Aberdeen, Wash., tide curves for Aug. 1 and 8. Which is a spring tide? Which is a neap tide? What type of tide is this? Label water levels on each curve.

3. Choose the best date and time for clam digging during the early morning hours in the month of Aug. in Aberdeen Wash.

4. Use both tables to correct Aberdeen tides to tides at Point Grenville for Aug. 20.

5. At what time on Aug. 17 do you arrive at Seymour Narrows to navigate the narrows at slack water between breakfast and dinnertime? (10. 4 p/ 276-77)