The document discusses the causes and types of tides. The moon's gravity pulling on the earth's oceans as both orbit the sun causes high and low tides. Spring tides occur when the moon, earth, and sun are aligned, creating the largest difference between high and low tides. Tide times vary slightly each day as the positions of the celestial bodies change their combined gravitational effects.

2.  There are two types of tides, high and
low, and special tides called spring and
neap tides!

3.  As the moon orbits around the earth and as
they orbit around the sun together travel
around the sun, the combined gravitational
forces cause the world's oceans to rise and
fall.
 Tides also change everyday, as the earth,
moon, and sun orbit, their positions
constantly shift, making the gravity effects
change, this makes tide times a bit different
every day!

4.  Spring tide: When the Moon, Earth, and
Sun fall in a straight line, which we call
syzygy, we can see the greatest distance
between high tide and low tide.

5. Special thankS to…
http://en.wikipedia.org/wiki/Tides#Range_v
ariation:_springs_and_neaps
Oceanography
picture suppliers
oceanography.com
director
brennan grieve
made with Microsoft PowerPoint 2007

6. The sea life hall of fame!
From Brennan
Ecology CO.