1 / 14

Tides

Tides. A. Tides. Tides are changes in the surface level of Earth’s ocean water Tides are caused by the effects of Moon and Sun’s gravity. B. High tide. The water closest to Moon bulges outward Another high tide happens on the opposite side Low tide occurs between the 2 high tides.

yestin
Download Presentation

Tides

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Tides

  2. A. Tides • Tides are changes in the surface level of Earth’s ocean water • Tides are caused by the effects of Moon and Sun’s gravity

  3. B. High tide • The water closest to Moon bulges outward • Another high tide happens on the opposite side • Low tide occurs between the 2 high tides

  4. Copy: Tides

  5. FYI – don’t copy • At Myrtle Beach 12/1/2010 High3:05am Low9:30am High3:18pm Low9:45pm 12/2/2010 High4:03am Low10:30am High4:17pm Low10:39pm 12/3/2010 High4:59am Low11:25am High5:13pm Low11:30 pm 12/4/2010 High5:51am Low12:17pm High6:06pm 12/5/2010 Low12:19am High6:41am Low1:06pm High6:55pm 12/6/2010 Low1:07am High7:28am Low1:52pm High7:41pm 12/7/2010 Low1:54am High8:14am Low2:37pm High8:27pm

  6. C. Spring tides • When sun and moon are aligned the high tides are higher and low tides are lower • New moon or full moon

  7. Copy: Spring Tide

  8. FYI – don’t copy • The Proxigean Spring Tide is a rare, unusually high tide. This very high tide occurs when the moon is both unusually close to the Earth and in the New Moon phase. The proxigean spring tide occurs at most once every 1.5 years. During the last 400 years, there have been 39 instances or 'Extreme Proxigean Spring Tides' where the tide-producing severity has been near the maximum. The last one of these was on March 7 1995 during a lunar Full Moon. There were, in fact cases of extreme tidal flooding recorded during these particular spring tides which occur once every 31 years.

  9. September 10th was the day for the Proxigean tides in Bay of Fundy. Here is the Parrsboro, Nova Scotia wharf & lighthouse at low tide in the morning and high tide in the afternoon on this day .

  10. D. Neap tide • When Sun and Moon are at right angles to each other, there is little difference in high and low tide • 1st or 3rd /Last quarter moon

  11. Copy: Neap Tide

  12. Don’t Copy: A view of the tides at Halls Harbour on Nova Scotia's Bay of Fundy. This is a time lapse of the tidal rise and fall over a period of six and a half hours. During the next six hours of ebb the fishermen unload their boats on the dock. That's a high tide every 12 and 1/2 hours! There are two high tides every 25 hours. In the Bay of Fundy, tides have a range of 44.6 ft. Bay of Fundy http://www.bayoffundytourism.com/tides/

More Related