The moon's shadow falling on Earth causes

• fulll moon

• lunar eclipse

• solar eclipse

• phase

The darkes part of teh moon's shadow is the

• umbra

• penumbra

The amount of the lit half of the moon that is seen from Earth chahges and leads to

• phases

• tides

Partial lunar eclipses occur more often because the penumbra is larger than the umbra so the moon enters it more often.

• True

• False

About how long passes between high tides?

• 6 hours

• 12 hours

• 24 hours

• 48 hours

The least difference between high and low tides occurs during a _______ _________.

• neap tide

• spring tide

In a ________ tide, the Earth, moon and sun are in a line.

• spring

• neap

What happens at a spring tide?

• There is only one high tide each day.

• There is only one low tide each day.

• There is the most difference between consecutie high and low tides.

• There is the least difference between consecutive high and low tides.

Which motion does Earth complete every 365 days

• eclipse

• equinox

• revolution

• rotation

The calendar we use is based on

• the time it takes the moon to rotate once on its axis

• the time it takes Earth to complete one orbit

• the occurrence of a solar eclipse

• the length of each session