1. Ocean Waves and Tides
Ocean Tides

3. Tides The rise and fall in sea level is called a tide.
Caused by a giant bulge of water.
One low-tide/high-tide cycle takes about 12 hrs and 25 min.
Tidal range is the difference in ocean level between high-tide and low-tide.

4. Spring Tides
Earth, Moon, and Sun are lined up (new and Full Moon positions).
High Tides are higher and Low Tides are lower than normal. This results in a BIG tidal range.
The New Moon Spring Tide is the STRONGEST of all the tides. Because both the moon and sun are pulling in the same direction.

6. Neap Tides
Earth, Moon, and Sun form right angles. 1st and 3rd Quarter Moons.
High Tides are lower and Low Tides are higher than normal. Small Tidal Range.

9. Gravitational Effect of the Moon
Two big bulges of water form on the Earth:
one directly under the moon
another on the exact opposite side
As the Earth spins, the bulges follow the moon.

10. The Bulge of water will follow the moon’s movement.

11. Gravitational Effect of the Moon
The rise and fall in sea level is called a tide.
Caused by a giant bulge of water.
One low-tide/high-tide cycle takes about 12 hrs. and 25 min.
Tidal range is the difference in ocean level between high-tide and low-tide.
Earth, Moon, and Sun are lined up.
High Tides are higher and Low Tides are lower than normal.
Earth, Moon, and Sun form right angles.
High Tides are lower and Low Tides are higher than normal.
Gravitational Effect of the Moon
Two big bulges of water form on the Earth:
one directly under the moon
another on the exact opposite side
As the Earth spins, the bulges follow the moon.
The Bulge of water will follow the moon’s movement.