A _________ is a body that orbits another body.

As the moon turns, the _______ of the moon’s surface that is

illuminated by sunlight changes.

An ___________

occurs when one celestial body passes through the shadow

of another.

The complete cycle of moon phases repeats every _______ days

A ____________ occurs when Earth is positioned between

the moon and the sun and when Earth’s shadow crosses

the sunlit half of the moon.

During a total ____________, the light from the sun is completely blocked by the moon.

_______ are the periodic rise and fall of the water level in oceans and other bodies of water.

Tides are caused by the force of gravity exerted by the ______ and the _______.

The moon’s gravity has the strongest effect on water on the side of Earth (facing /away from) the moon.

A ____________ is the difference between the levels of ocean water at high tide and low tide.

__________ occur twice a month when Earth, the sun, and the moon form a straight line in space.

__________ occur twice a month when Earth, the sun, and the moon form a 90° angle in space.

__________ always occur during the new moon and full moon.

____________ always occur during the first-quarter moon and third-quarter moon

Spring tides happen during which two Moon phases?