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Tides

Tides. Pages 32-33 in textbook. Tides, p. 11 in packet…. Tides Water on the shores rises for about 6 hours until ‘high tide’, then falls for about 6 hours until ‘low tide’. Gravity! Complete the boxes in the diagram in your notes; See next slide or p. 33 in book (Figure 10) for information!.

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Tides

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  1. Tides Pages 32-33 in textbook

  2. Tides, p. 11 in packet… • Tides • Water on the shores rises for about 6 hours until ‘high tide’, then falls for about 6 hours until ‘low tide’. • Gravity! Complete the boxes in the diagram in your notes; See next slide or p. 33 in book (Figure 10) for information!

  3. Tides occur mainly due to the difference in the force of gravity between the moon and different parts of Earth. http://www.wiley.com/college/strahler/0471480533/animations/ch19_animations/animation3.html ; http://www.onr.navy.mil/focus/ocean/motion/tides1.htm Tides

  4. Tides, p. 11 in packet… • Differences in the moon’s pull (gravity) on different parts of the Earth (water and land). **High tide – water closes to the moon is pulled toward the moon, and water farthest away from the moon is ‘left behind’ as the Earth is pulled. **Low tide – occurs between areas of high tide.

  5. When Earth, the sun, and the moon are in a straight line, a spring tide occurs. When the moon is at a right angle to the sun, a neap tide occurs. Spring and Neap Tides Full and New moons Site 1: http://oceanservice.noaa.gov/education/kits/tides/media/supp_tide06a.html Site 2: http://www.valdosta.edu/~cbarnbau/astro_demos/tides/neap_sp.html First and Third quarter

  6. Phases, Eclipses, and Tides, p. 15 • A – New, B – Waxing Crescent, C – First quarter, D – Full, E – Waning Gibbous, F – Third quarter. • A and D – Spring Tide; C and F – Neap Tide • Neap • Eclipse • Penumbra • Tides • Umbra • Phase • Spring • Lunar (during a Full moon!!) • Solar (during a New moon!!) • Gravity

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