NASA Article-Understanding Moon Phases and Movements

What is the only object in our solar system that shines with its own light?

• Mars

• The Sun

• The Earth

• The Moon

How many days does it take for the Moon to complete its phases from new moon to new moon?

• 29.5 days

• 30 days

• 27.3 days

• 31 days

During which phase is the Moon invisible from Earth?

• Full Moon

• New Moon

• First Quarter

• Waning Crescent

What is the term for the apparent rolling motion of the Moon?

• Earthshine

• Libration

• Tidal Locking

• Synchronous Rotation

What is the phenomenon called when the Moon appears to nod?

• Libration in Longitude

• Synchronous Rotation

• Libration in Latitude

• Tidal Locking

What is the term for the light reflected from Earth that illuminates the Moon?

• Moonlight

• Sunshine

• Earthshine

• Starlight

Which phase of the Moon is best for viewing during the day?

• Full Moon

• First Quarter

• Waning Crescent

• New Moon

What is the average distance of the Moon from Earth?

• 238,855 miles

• 150,000 miles

• Both A and B

• 384,399 km

What is the term for the Moon's orbit being an elongated circle?

• Circular Orbit

• Elliptical Orbit

• Spherical Orbit

• Rectangular Orbit

What is the term for the Moon's rotation that keeps the same side facing Earth?

• Earthshine

• Libration

• Tidal Locking

• Synchronous Rotation