Eclipses and Tides.

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Presentation transcript:

Eclipses and Tides

Solar eclipse The Moon, lines up exactly between the Earth and the Sun.

Lunar eclipse The Moon is blocked from the Sun’s rays by the Earth.

Parts of an eclipse Total darkness is called the umbra The outer shadow is partially illuminated by the Sun, and is called the penumbra.

Why eclipses happen

When can they occur? Solar Eclipses – can occur only during the new moon phase Lunar eclipses – can occur only during the full moon phase

Why not every month? Moon revolves around Earth Earth revolves around Sun Alignment has to be perfect, that is rare.

Why we have tides The gravitational pull of the moon and Sun The moon is closer so it affects us more than the Sun.

Tides Tides happen every day! High tides happen every 12 hrs every day Low tides happen every 12 hrs every day That means every 6 hours you have a high or low tide shift.

Spring tides

When do tides happen Spring Tides: new and full moon phase – SUPER high tides Neap Tides: 1st and 3rd Quarter phases – Smaller high tides

Bay of Fundy

Bay of Fundy http://bayoffundytourism.com/worlds-highest-tides/