December 15, 2011

Objective Determine the interval of

high and low tides

Agenda Tide Notes Graphing the Tides Lab Comets

TidesNever give up, for that is just the place and time that the tide will turn.

-- Harriet Beecher Stowe

I do not know what I may appear to the world; but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.

-- Isaac Newton

Earth

Moon

Tides are the vertical movement of water, specifically the alternate rise (flood) and fall (ebb) of water in the ocean. This is mostly noticeable along continental shorelines.

The influence of the Moon’s gravitational force acting on the Earth’s oceans and the Earth (the rocky part).

Why?

Earth

Moon

Sun

High TideHigh Tide

Low Tide

Low Tide

Tides are more influenced by the gravitational effect of the Moon than they are by that of the Sun (the Moon's closeness to us outweighs by far the Sun's greater size).

So, as the Earth spins around its axis, how many high and low tides do we have a day?

Earth

Moon Moon

Spring Tides The gravitational affects of the moon and sun combine to influence the flow of the oceans on Earth.

New MoonPhase of the moon?

Full Moon

Phase of the moon?

Moon

New Moon

Phase of the moon?

Higher high tides and lower low tides

Earth

Moon

MoonFirst Quarter

Phase of the moon?

Third Quarter

Phase of the moon?

Neap Tides The gravitational affects of the moon and sun fight each other with their influence on the flow of the oceans on Earth.

Moon

Third Quarter

Phase of the moon?

Lowest high tides and highest low tides