Unit 7: Tides and Seasons

Front

Daily Tide

Back

Water on the side of the Earth closest to the Moon is most strongly affected by the Moon’s gravitational pull, causing it to rise in locations aligned with the moon and fall in areas perpendicular (at a right angle) to the moon.

Front

First Quarter

Back

When the right half of the lit up side of the moon is facing Earth (the moon is at a right angle to the Earth & Sun).

Front

Full Moon

Back

When the entire lit up side is facing Earth (the moon is on the far side of the Earth in line with the Sun).

Front

Gravitational Attraction

Back

Force of attraction between all masses in the universe, especially the attraction of the Earth's oceans and the moon.

Front

High Tide

Back

When the tide is at its highest level; occurs 2 times every day.

Front

Low Tide

Back

When the tide is at its lowest level; occurs 2 times every day.

Front

Lunar Cycle

Back

The predictable change in the appearance of the moon from Earth as it revolves around Earth; approximately 28 day cycle.

Front

Neap Tide

Back

Occurs at the first and third (last) quarter Moon phases; the Sun is at a right angle to the Moon; the least difference between high & low tide.

Front

New Moon

Back

When no light is visible on the moon; the dark side is facing Earth (the moon is directly in between the Earth & Sun).

Front

Revolve

Back

To move in a circular path around another object (aka: orbit).