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### Moon

It Wanes & It Waxes

Bellringer

- Place HmWk in the “In-Box”.
- Pick up a “Photo Finish” from the front table.
- List & Illustrate the 8 phases of the moon in each box.
- After five minutes we will discuss your knowledge of moon phases.

Objectives

- TLW explain what causes the phases of Earth’s moon.
- TLW explain why we only see one side of the moon.
- TLW list & describe the 8 phases of the moon.

Terms

- Phase
- Orbit
- Waxing
- Waning

The Moon

- What causes the moon phases?

What causes the phases of Earth’s moon?

- Results from it changing position relative to Earth & the sun.
- Phase: The amount of sunlight on the side of the moon that faces Earth.

Why do we only see one side of the moon?

- The moon’s period of rotation is the same as its period of revolution.
- Orbit: The path that a body follows as it travels around another body in space.

Moon Phases

- Waxing: (Growing) The sunlit fraction that we see from Earth is getting larger.
- Waning: (Shrinking) The sunlit fraction that we see from the Earth is getting smaller.

Phases of the Moon Activity

- Find the Moon Phase Diagram on page 662 in your textbook
- Use the Phases of the Moon Activity Sheet to record your observations.
- Submit both the Photo Finish organizer & Phases of the Moon Activity Sheet to the “In-Box at the end of class.

Conclusion

- In the “L” column list the ideas you learned today related to the following questions:
- What causes the phases of Earth’s moon.
- Why can we only see one side of the moon.
- List & describe the 8 phases of the moon.

Homework

- Moon On A Stick Worksheet.
- Complete the front & back
- Due Tuesday.

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