7. The high-tide-to-low-tide-to-high-tide cycle takes about 12 hours and 25 minutes. Why isn't this cycle precisely 12 -hours long? 8. Pluto spins about once every 6 days and has a large moon that orbits also in about 6 days. What would tides be like on Pluto if it had them? Use sketches to illustrate your answer.

### 7. The high-tide-to-low-tide cycle is about 12 hours and 25 minutes due to the Moon's orbit around Earth taking longer than the Earth's rotation. The Moon's orbit is about 27.3 days, and the Earth's rotation is about 24 hours, causing the lunar day to be about 50 minutes longer than the solar day. ### 8. If Pluto had tides, they would be influenced by Charon's gravity and the synchronous rotation of Pluto and Charon. This would result in a stable tidal pattern with high tides on the sides facing and opposite Charon, synchronized with Pluto's rotation and Charon's orbit.