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Jessica Allard

on 30 September 2013

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Transcript of Tides

By: Audrey-Anne Girouard, Jessica Allard and Elizabeth Fiset

What are Tides?
How Tides are Caused
What are tides: Tides are big waves that move in the ocean.

What causes tides: It is caused by the interaction of the moon and the earth (gravitational forces). Even though the moon is much smaller than the earth, it is the one that ''pulls'' the most.
http://www.enchantedlearning.com/subjects/ocean/Tides.shtml - how tides are caused
http://oceanservice.noaa.gov/facts/tides.html - what are tides
http://www.newton.ac.uk/newtlife.html -isaac newton
http://www.moonconnection.com/moon_phases.phtml - phases of the moon
http://www.rebazveholdinglimited.net/ - other picture
http://www.moonconnection.com/moon_phases.phtml - phases of the moon
http://en.wikipedia.org/wiki/Isaac_Newton - isaac newton picture
http://www.enchantedlearning.com/subjects/astronomy/moon/Tides.shtml -spring&neap tides
http://en.wikibooks.org/wiki/Adventist_Youth_Honors_Answer_Book/Nature/Stars_-_Advanced_(General_Conference) - high and low tides
http://www.woodhallspa.org/services_travelinfo.html - Lincolnshire map
http://oceans52.wordpress.com/2012/04/05/ten-cool-facts-about-ocean-tides/ - facts about tides
http://surfingsantacruz.com/facts_about_tides - facts about tides
http://science.howstuffworks.com/environmental/earth/geophysics/tide-cause.htm - high tides
Who was the First Person to Explain Tides Scientifically?
Isaac Newton (1642-1727) was the first to explain tides scientifically. His explanation got published in 1886.

He was born in Woolstrophe, close to Grantham in Lincolnshire. In 1661, he attended Cambridge University and was a Lucasian Professor of Mathematics in 1669.
Picture: Isaac Newton
Picture: Phases of the Moon
Spring and Neap Tides
During the spring tides, the high tides are very high and the low tides are very low. They occur when the earth, the sun, and the moon are in a line. They occur during the full moon and the new moon.
Neap tides are very weak tides. They occur when the sun and the moon are perpendicular to one another. Neap tides occur during quarter moons.
Picture: Spring Tides & Neap Tides
High and Low Tides
High tides are when the water level is at it's maximum. If the moon is on top or on the opposite side of the planet, you will see a high tide.
Low tides are when the water level is at it's minimum. It all depends on the position of the moon.
Picture: High and Low Tides
Picture: Lincolnshire Map
Facts About Tides
1. The earth rotates on it's axis once every 25 hours and the moon rotates around the earth once every 27 hours.
2. Spring tides and neap tides are about 20% higher than average.
3. The highest tides were in the Bay of Fundy, Nova Scotia.
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