
Earth, Moon, and Sun Ch 2 Quiz
Quiz by Melissa Plantier
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How much of the moon does the sun illuminate?
From Earth we can only see the half of the Moon that is facing us.
The reason there is a pattern to the position of the Moon is because the Moon rotates on its axis.
The reason we see different phases of the moon is because we see different amounts of the illuminated half as the Moon moves around Earth.
It takes about one month for the Moon to orbit, so the pattern of moon phases repeats every month.
 Susan is a space scientist who made this diagram of the Moon and Earth, as seen from above (top view), with sunlight coming from the left, as shown by the arrows. Why does Susan’s diagram show that it’s bright on the left half of the Moon?

Astronomers made two observations of the Moon that were several days apart. Their observations are shown in the diagram above. The light part of the Moon appeared to get larger over time. Why did this happen?

Three people made the diagrams above to show what they think the Moon looks like when it is seen from above (top view). In these diagrams, the sunlight is coming from the left, as shown by the arrows. Which diagram is accurate and why?

Suki looked up one night and saw a crescent moon.If Suki looks for the Moon again in one month, what will he see?

Which of these things is true about the Moon?
Which moon phase happens at position 3 in the diagram?

Shira looked up one night and saw a full moon. How long will it be before she can see a full moon again?

The diagram below shows Earth and the Moon from above (top view). Why is there a dotted circle drawn in this diagram?

Which moon phase happens at position 1 in the diagram?

Which moon phase occurs at position 5 in the diagram?

Which moon phase occurs at position 4 in the diagram?

How much of the moon does the sun illuminate?