Moon’s Effect On Tides

Warm-Up ActivityIn 3-5 sentences explain what you think happens to form tides.

GravityGravity is stronger when objects are closer

together. The moon will pull the water on the side of

Earth nearest it more strongly than it pulls on Earth itself.

The positions of the moon can also effect the time and the height of the tides.

Spring TideIn line with the full moon, new moon, and the

sun.The greatest tidal range.High tides are especially high and low tides

are especially low during the Spring Tide. They occur twice a month.

Neap TideIn line with the quarter phases.Not in line with the sun.High tides that are not very high and low

tides that are not very low. Occurs twice a month.

Effect of PerigeePerigee

The closest point to Earth in its orbit.Tidal effect is greater

Especially if it occurs during the new moon and full moon phases.

Effect of ApogeeApogee

Farthest point from Earth.Tidal effect is less.

Tidal RangeThe difference in the water level between

high tide and low tide is called the tidal range.

Tidal ranges vary from one body of water to the next.

There’s two high tides and two low tides in a 24-hour period.

Ending QuestionIn 5-8 sentences explain… What moon phase does spring and neap tide

occur at?What is spring and neap tide tidal range?How does gravity affect the tidal range?

CitationsBittman, Erin. Oreo Moon Phases. 2012.

Photograph. EisforexploreWeb. 16 May 2013.. N.p.. Web. 17 May 2013.

<http://images.yourdictionary.com/spring-tide>.. N.p.. Web. 17 May 2013.

<http://images.yourdictionary.com/neap-tide>.. N.p. Web. 17 May 2013.

<http://heavenswithlamps.wordpress.com/2012/05/05/are-you-ready-for-the-super-moon-tonight/>.

Spaulding, Nancy. Earth Science. Evanston, IL: McDougal Littell, 2005. 541-543. Print.