Front

Why does Susan’s diagram show that it’s bright on the left half of the Moon?

Back

Because Susan’s diagram is showing that the half of the Moon that is facing the sun is lit by the sun, and the other half is dark.

Front

Why did the light part of the Moon appear to get larger over time between two observations?

Back

Between the first observation and the second observation, the Moon moved so that the astronomers were able to see more of the half that faces the sun.

Front

Could the half of the Moon that faces Earth ever be completely dark in any of these diagrams?

Back

Yes, always in Diagram 1 and sometimes in Diagram 3.

Front

What does the Moon look like from above when sunlight is coming from the left?

Back

Diagram A is accurate because the half of the Moon that is facing the sun is lit by the sun, and the other half is dark.

Front

Why did the light part of the Moon appear to get smaller over time in the student's observations?

Back

Between the first observation and the second observation, the Moon moved so that the student astronomer was able to see less of the half that faces the sun.

Front

Could the half of the Moon that faces Earth ever be completely dark in any of these diagrams?

Back

Yes, always in Diagram 3 and sometimes in Diagram 1.

Front

Which diagram accurately shows the Moon from above with sunlight coming from the left?

Back

Diagram C is accurate because the half of the Moon that is facing the sun is lit by the sun, and the other half is dark.

Front

Why did the light part of the Moon appear to get larger over time in Omi's observations?

Back

Between the first observation and the second observation, the Moon moved so that Omi was able to see more of the half that faces the sun.

Front

Could the half of the Moon that faces Earth ever be completely dark in any of these diagrams?

Back

Yes, always in Diagram 1 and sometimes in Diagram 2.

Front

Three observers 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?

Back

Diagram A is accurate because the half of the Moon that is facing the sun is lit by the sun, and the other half is dark.