EMS EOU Assessment (2/25)- Fields

Diagram A is accurate because the whole Moon is bright as long as there are no shadows covering parts of it.

Diagram B is accurate because the Moon is almost as close as it can be to the sun, so the Moon is almost fully lit by the sun.

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.

All three diagrams are sometimes accurate because the Moon has some lighter-colored rock and some darker-colored rock, and the half of the Moon with the lighter-colored rock rotates to face different directions.

Between the first photograph and the second photograph, the Moon moved farther away from the sun so less sunlight reached the Moon’s surface.

Between the first photograph and the second photograph, Earth moved so its shadow was blocking more of the Moon so the student astronomer was able to see less of it.

Between the first photograph and the second photograph, the Moon rotated so that less of the light-colored rock on the Moon’s surface faced Earth.

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

No, the Moon is always lit by the sun.

Yes, always in Diagrams 1 and 2, but never in Diagram 3.

Yes, always in Diagram 2, but never in Diagrams 1 or 3.

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

No, light travels in straight lines only.

Yes, light travels like a river, wherever there is an open path.

Maybe; light travels in unpredictable ways.

Yes, if the light is bright enough, then it can bend to follow a curved path.

Suki will see a crescent moon again, like Diagram A.

Suki will see a quarter moon, like Diagram B.

Suki could see either a crescent or a quarter moon; it depends on the time of year.

There’s no way to tell because the Moon’s pattern is always changing.