Tides intro!
Presentation
•
Science
•
7th Grade
•
Practice Problem
•
Easy
+6
Standards-aligned
Anthony Kaltenbach
Used 28+ times
FREE Resource
9 Slides • 14 Questions
1
2
The reversing of St. John River is caused by ocean tides.
This is the Bay of Fundy the river is part of that system.
What are Tides?
3
Word Cloud
What do you think of when you hear the word TIDE?
4
The rise & fall of ocean water that occurs every 12.5 hours or so. The water rises for 6 hours and then falls for 6 hours.
Tide
5
Fill in the Blanks
6
The force of gravity pulls the moon & Earth (including the water on Earth's surface) toward each other!
Gravity
mainly by differences in how much gravity from the moon and the sun pulls on different parts of Earth.
Tides are caused...
The Tide Cycle
7
Fill in the Blanks
8
This also means there are 2 places with low tides!
There are 2 places with high tides!
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1 high tide occurs on the side of the Earth that faces the moon. A 2nd high tide occurs on the opposite side of Earth. (Look where the low tides are!)
As Earth rotates...
10
Hotspot
Which point would be a high tide?
11
Hotspot
Which point would be a low tide?
12
The Sun's Role in Tides.
Changes in the position of the Earth, the moon, and the sun affect the heights of the tides during a month.
13
Spring tides occur. These are tides with the biggest difference between high and low tides.
During a new or full moon...
14
Hotspot
Which 2 positions of the moon around the Earth would cause spring tides to occur?
15
Neap tides occur. These are tides with the least difference between high & low tides.
During a 1st quarter or 3rd Quarter moon...
16
Hotspot
Which 2 positions of the moon around the Earth would cause neap tides to occur?
17
Fill in the Blanks
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Word Cloud
In 1 or 2 words, what causes tides?
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Multiple Choice
High and low tides are caused by:
the Moon's gravitational pull
periodic powerful tsunami waves
water sloshing around due do Earth's elliptical orbit
powerful thunderstorm winds
20
Multiple Choice
Which response best explains changing tides on Earth:
The Moon circles the Sun and then pauses to make a tidal bulge. The bulge is high tide.
The Earth rotates and different regions are pulled into the bulge created by the Moon's gravitational pull.
The periodic earthquakes from the mid-ocean ridge send micro-tsunami twice per day to coastlines around the world.
Powerful thunderstorms form twice a day in the middle of the oceans, these send powerful waves to coastlines.
21
Labelling
Determine the tide that each region would be experiencing:
Low tide
High tide
22
Drag and Drop
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Drag and Drop
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