Moon Phases Answer Key
Explore the phases of the Moon and understand why the Moon appears to change shape.
Looking for Moon Phases answers? This complete answer key provides verified solutions for all student exploration activities and assessment questions in the ExploreLearning Moon Phases Gizmo.
✅ 100% Free • Step-by-step explanations • Perfect for homework help • Covers all activities • Updated for 2026
Prior Knowledge Questions
Q1.Why does the Moon appear to change shape?
The Moon appears to change shape because we see different portions of its sunlit side as it orbits Earth.
Q2.How long does it take the Moon to complete one orbit around Earth?
The Moon takes approximately 29.5 days to complete one orbit around Earth.
Activity A – Phases of the Moon
Q3.What is a new moon?
A new moon occurs when the Moon is between Earth and the Sun, and the side facing Earth is not illuminated.
Q4.What is a full moon?
Q5.What are the phases in order starting from new moon?
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