Vocabulary List 13

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The phase that results when the Moon is on the opposite side of the Earth as the Sun. The entire Moon is lit.

The spinning of an object on its axis. This causes night and day on Earth.

Tides during the new and full moons, when the Earth, Sun and Moon line up in a row. The gravity of the Sun and Moon work together and have the strongest pull on Earth. This produces the largest difference between high and low tide.

When the moon goes through all of its phases in a 29 1/2 day cycle and then starts over.

The Moon looks more than half full, but not completely full. There are 2 of these in the Lunar Cycle.

From the full moon to the new moon, less of the moon's lit surface is visible to us. The moon is getting darker each night.

From new moon to full moon, more of the moon's lit surface is visible to us. The moon is getting brighter each night.

One of two days in a year when there is equal day and night. This happens around March 20. This happens because Earth's axis is not tilted towards or away from the sun.