Question

question 1e: how much of the moon does the sun shine on now? question 1f: how much of that sunlit part do we see from earth? you should now be able to answer the following questions without using starry night. question 1g: how much of the moons surface receives sunlight during the third quarter (last quarter) phase? hint: when the moon is at the bottom of the screen. question 1h: how much of that sunlit part do we see on earth at third quarter (last quarter) phase?

Explanation:

Step1: General knowledge about lunar illumination

The Sun always illuminates half of the Moon's surface, regardless of the lunar phase. This is because the Moon is a sphere and the Sun is a distant light - source.

Step2: View from Earth during different phases

The amount of the sunlit part of the Moon that we see from Earth changes with the lunar phase due to the relative positions of the Earth, Moon, and Sun.

Answer:

1e:
Half (50%) of the Moon's surface is always illuminated by the Sun.