Vocabulary #7 (The Moon in motion)

Definitions:

1. phase of the moon: the shape of the lighted part of the Moon seen from Earth at any time
2. lunar eclipse: a blocking of a view of the full Moon when the moon passes into Earth's shadow
3. solar eclipse: a blocking out of a view of the Sun when Earth passes through the Moon's shadow
4. tide: the regular rise and fall of the water level along a shoreline

Sentences and illustrations:

1. The phase of the moon that you see depends on the position of the Sun, the Moon, and Earth with respect to each other.

2. Twice a month the Moon crosses the plane of Earth's orbit, when this takes place at full moon  the Moon might pass through Earth's shadow; this causes a lunar eclipse.

3. For a solar eclipse to occur, the Moon must be in straight line between the Sun and Earth.

4. Tides are caused by the pull of the Moon's gravity on Earth.