Question

1. 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?note: these diagrams are not to scale.a. no, the moon is always lit by the sun.b. yes, always in diagrams 1 and 2, but never in diagram 3.c. yes, always in diagram 2, but never in diagrams 1 or 3.d. yes, always in diagram 2 and sometimes in diagram 1.9. which of these things is true about the moon? *a. the moon is always moving around earth in a circle.b. the moon is always in the same position in earths sky.c. the moon is always moving in many changing patterns around earth.d. the moon is always moving back and forth across earths sky.

Explanation:

Question 8

Step1: Analyze lunar illumination logic

The half of the Moon facing Earth is completely dark only when the Moon is positioned between the Sun and Earth (so the Sun-lit side faces away from Earth). This is the new moon position.

Step2: Match to diagrams

• Diagram 1: Moon is to the right of Earth (Sun is left), so Earth is between Sun and Moon; Moon's lit side faces Earth.
• Diagram 2: Moon is to the left of Earth, directly between Sun and Earth; its lit side faces away from Earth, so the Earth-facing half is fully dark.
• Diagram 3: Moon is above Earth, so part of its lit side faces Earth; it cannot be fully dark.

Step3: Evaluate options

Only Diagram 2 has the correct alignment for the Earth-facing Moon half to be fully dark.

The Moon orbits Earth in a nearly circular (elliptical) path, so it follows a consistent, single orbital pattern around Earth. Option A is the only accurate statement:

• B is false: the Moon moves across Earth's sky daily.
• C is false: its orbit is a stable, consistent path, not changing patterns.
• D is false: it does not move back and forth, it orbits in one direction.

Answer:

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

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Question 9