Gravity in Our Solar System 3: Tidal Data
Presentation
•
Science
•
6th - 8th Grade
•
Easy
Standards-aligned
Joshua Ellis
Used 10+ times
FREE Resource
14 Slides • 13 Questions
1
Gravity in Our Solar System 3: Tide Data
Objectives:
I can identify patterns in tidal data.
- I can calculate tidal ranges.
- I can identify spring and neap tides.
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Poll
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Describing Tides:
High vs. Low Tide
High tide is when the ocean level rises to its greatest elevation.
Low tide is when the ocean level drops to its lowest elevation.
Tidal range is the difference between these two elevations.
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Type answer...
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Fill in the Blanks
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It is easier to see the high tides and low tides if we graph the data.
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Multiple Choice
How many high tides does Lynn Harbor experience in one day?
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Multiple Choice
How many low tides does Lynn Harbor experience in one day?
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There are two high tides a day and two low tides a day.
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Multiple Choice
About how much time goes by between a low tide and a high tide?
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Multiple Choice
What is the approximate interval between two high tides?
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It takes about 6 hours for the tide to change from low to high or from high to low. There are about 12 hours between high tides and 12 hours between low tides.
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How to Calculate
Tidal Range:
Find the highest tide of the day
Find the lowest tide of the day
Subtract the low tide from the high tide.
Range = High - Low
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Multiple Choice
What was the tidal range at Lynn Harbor on Jan 9th?
Range = Highest - Lowest
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Multiple Choice
What will the tidal range be at Lynn Harbor on Jan 26th?
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Lets take a look at tide data for Lynn Harbor over a longer period of time.
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This shows tidal data from Dec 3 to Jan 3. Each bottom point is a low tide. Each top point is a high tide.
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Open Ended
The top peaks of the graph show all the high tides that occurred during this time period. Notice that the height of the high tides are NOT the same everyday.
Describe how the height of the high tides change from December 3rd to January 3rd.
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When the tidal range is very large, we call it a SPRING TIDE
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When the tidal range is small, we call it a NEAP TIDE
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Multiple Choice
Figure A and Figure B show high and low tides at two different times in Lynn Harbor.
Which figure shows the greatest tidal range?
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Multiple Choice
Figure A and Figure B show high and low tides at two different times in Lynn Harbor.
Which figure shows a neap tide?
(neap = weak)
(spring = strong)
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Multiple Choice
The data tables show tidal data for different days in Lynn Harbor. On one of the days a spring tide is occurring and on the other a neap tide is occurring.
Which day is a spring tide occurring?
(neap = weak)
(spring = strong)
Gravity in Our Solar System 3: Tide Data
Objectives:
I can identify patterns in tidal data.
- I can calculate tidal ranges.
- I can identify spring and neap tides.
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