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Moon Phases Shadow Worksheet

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Moon Phases Shadow Worksheet

Use the information on this page to investigate why the Moon appears to change shape. Answer each question, then draw a model of your own.

The Moon and its changing appearance

The Moon, also called Te Marama, is a rocky object that travels around Earth. It does not make its own light. Sunlight lights up half of the Moon at all times. As the Moon moves around Earth, we see different amounts of its sunlit half. These changing appearances are called phases. The Moon does not grow or shrink, and Earth’s shadow does not cause the usual phases. Earth’s shadow falls on the Moon only during a lunar eclipse.

Investigate the phases

1.In a Moon model, a torch shines on a small ball. What does the torch represent, and what does the small ball represent?
2.Why is part of the Moon lit?
  • The Moon makes its own light.
  • Sunlight lights up part of the Moon.
  • Earth shines a torch at the Moon.
3.When the Moon appears fully lit from Earth, how much of its sunlit half can we see?
4.True or false: The Moon’s usual phases happen because Earth’s shadow moves across the Moon.
TrueFalse
5.Complete the sentence: The Moon appears to change shape because it moves around , and we see different amounts of its side.
6.Match each phase to its appearance from Earth.
  • New moon
  • Full moon
  • First quarter
  • The Moon is difficult to see because its lit side faces away from Earth.
  • The Moon appears fully lit.
  • About half of the visible Moon is lit.
7.A friend says, “The Moon gets bigger at full moon.” Explain why this idea is incorrect.
8.A lunar eclipse is different from an ordinary Moon phase. What causes a lunar eclipse?
9.Draw a simple model with the Sun, Earth and Moon. Add arrows to show sunlight travelling from the Sun, and shade the part of the Moon that is not lit.

2 printable pages

  • Moon Phases Shadow Worksheet, page 1 of 2: The Moon and its changing appearance, Investigate the phases

    Page 1

  • Moon Phases Shadow Worksheet, page 2 of 2: 6. Match each phase to its appearance from Earth.

    Page 2

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