Amplify Earth Moon and Sun

Why do we see different phases of the moon?

• We see different amounts of the illuminated half of the moon because the moon moves to different positions around the Earth.

• We see different phases of the moon due to the colored rocks we see from Earth.

• We see different amounts of the Moon due to how close it is to the sun.

• We don't see different phases of the moon.

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Is there a pattern to the position of the Moon?

• Yes-because the Moon orbits around Earth.

• Yes-because the Moon gets closer or farther away from the sun.

• No-the moon appears in the sky at different times and is unpredictable.

• No-the moon never moves or changes.

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Is there ever a time that the moon will be completely dark from Earth's perspective?

• Yes, only during a lunar eclipse.

• Yes, always during a new moon.

• Yes, always during a new moon and sometimes during a full moon when a lunar eclipse is possible.

• No, the moon is always half illuminated by the sun.

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Lunar eclipses...

• happen all the time in the new moon phase.

• can only happen when the Earth is in between the sun and moon.

• never happen.

• can only happen when the moon is in between the sun and Earth.

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a moon phase that looks like more than a half circle from Earth

• full moon

• crescent moon

• quarter moon

• waxing

• gibbous moon

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the nearly circular path a smaller object (like the Moon) travels around a larger object (like Earth)

• model

• waning

• waxing

• orbit

• illuminate

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the star that is the main source of light at the center of our solar system

• moon

• exoplanet

• Sun

• Earth

• illuminate

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a rocky sphere that travels around a planet

• sun

• moon

• pattern

• orbit

• terminator

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?

• Because as the Moon gets closer to the sun more of it is lit by the sun, so Susan’s diagram is showing sunlight on half of the Moon.

• Because the Moon has some lighter-colored rock and some darker-colored rock, and Susan’s diagram is showing that the half of the Moon with the lighter-colored rock has rotated to the left.

• Because there is a shadow from Earth falling on half of the Moon, and Susan’s diagram is showing that shadow on the right half of the Moon.

• 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.

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The diagrams above show Earth and the Moon in different positions, as seen from above (top view). Sunlight is coming from the left, but these diagrams do not show what parts of Earth or the Moon are light or dark. Could the half of the Moon that faces Earth ever be completely dark in any of these diagrams?

• No, the Moon is always lit by the sun.

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

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

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

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