Lunar phases

Question 1

New moon:

Answer 1

-The new moon phase is completed in approximately eight days. Moonlight increases toward the end of the phase when about 50% of the moon is illuminated.

Question 2

First quarter:

Answer 2

-Nearly seven days are required to complete the first quarter phase. The percentage of moon illumination at the beginning of the phase is close to 50% and increases until slightly less than 100% of the apparent disk is illuminated.

Question 3

Full moon:

Answer 3

-The full moon phase begins when 100% of the disk is illuminated. It ends seven days later when almost 50% of the moon is visible.

Question 4

Third quarter:

Answer 4

-The duration of the last phase is about seven days. It begins when close to 50% of the moon is visible and ends when 2% or less is visible.

Question 5

The moon angle changes about…?

Answer 5

15 degrees per hour, 1 degree every 4 minutes.