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‐ the tides caused by the gravitational pull and position of the sun with respect to
the earth.
‐the difference in water level between high and low tide
‐which occur when the moon is at 90 degree angles with both the earth and the
sun
‐2 high tides and two low tides of drastically differing heights each day
‐ happen during first quarter moon/last quarter moon
‐1 high and one low tide in a day
‐tides with a LARGE tidal range (more extreme)
‐ happen during full moon/new moon
‐tides with a SMALL tidal range (less extreme)
‐ 2 high and two low tides in a day
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1) Look at the graph you plotted. Describe the pattern you see.
2)
Does Halifax have diurnal, semidiurnal, or mixed tides? How do you know
this?
3)
During the 31 day period that you plotted, find the lowest low tide:
a) How low was it?
b)On which day did it occur?
4) During the 31 day period that you plotted, find the highest high tide:
a) How high was it?
b)On which day did it occur?
5) What do we call these tides in question 3 and 4?
What conclusions can you make about the moon phase in questions 3 and 4?
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1)
During the 30 day period that you plotted, find the lowest high tide:
a)
How high was it?
b)
On which day did it occur?
c)What kind of tide is this?
d)
What conclusions can you make about the moon phase?
2) Calculate the time difference (in hours and minutes) between high tide
and low tide during:
a)
A spring tide
b)
A neap tide
c)Is there any difference? Suggest a hypothesis to explain your answer.
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3. Approximately how many spring tides will we see
during a SCHOOL YEAR (September-June)?
4. A STORM SURGE occured when Hurricane Sandy
hit New Jersey and resulted in major flooding. Suggest
TWO reasons why the storm surge happened.
(Hint... time of day and time of month)
5. We had a quarter moon last Sunday, October 27.
We have a new moon this Sunday, November 3. Are
the tides in the Bay of Funday MORE likely to break
records on November 3 or October 27? Explain your
reasoning.
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