Why Does the Moon Change Shape?

How often does the Moon's phases repeat themselves?

• Every twenty nine or thirty days.

• Every three weeks

• Once a year

• Every seven days

According to the series of photos on page 339, around which day would their be a full moon?

• Around the 8th day

• Around the 14th day

• Around the 20th day

• Around the 29th day

True or False

Earth and Mercury both have the same amount of days in a year?

• True

• False

What prevents comets, asteroids, and planets from flying off into space?

• Earths gravity is pulling all of them towards Earth

• The comets and asteroids are bumping into each other causing them to go around in circles

• The Sun's gravity is always tugging on them because they are smaller

• They do fly off into space, but they return very quickly

According to scientist, which planet has the most moons that circle it?

• Earth

• Mars

• Jupiter

• Saturn

How many hours does it take for the Earth to make one complete rotation?

• 14 Hours

• 9 Hours

• 12 Hours

• 24 hours

Although the Sun is the closest star to us, why does it glow so bright?

• The Sun is made of boiling gases that are so hot that they glow

• The Sun has a reflective surface that all the other stars shine off of

• The Sun is only bright because of the light that the Earth gives off

• The Sun only looks bright because space is so dark compared to it

True or False

The Moon changes shapes because of the Sun's rays that light it up differently.

• True

• False

What phase of the Moon Cycle shows the Moon being lit up around twenty five percent?

• New Moon

• Quarter Moon

• Gibbous Moon

• Full Moon

Why does the Moon completely "disappear" from our view on Earth each cycle?

• The Moon orbits away from Earth causing it to disappear

• The Moon hides behind the sun and we are unable to see it

• We can only see the Moon's near side, so when the far side is lit up, the near side seems to dissappear

• We can only see the Moon's far side, so when the near side is lit up, the far side seems to dissappear