2. The Regular cycle of the Earth- Moon system.
The Lunar Cycle
The Regular cycle of the Earth- Moon system.
It takes 29.5 days for the moon to move through the phases.

3. New Moon Cycle begins at the new moon
The moon is not visible from the earth

4. Waxing Crescent
You begin to see more of the moon as it appears to grow or “WAX”.

5. 1st Quarter Moon
You see half of the lighted side of the moon

6. The moon continues to wax.
Waxing Gibbous
The moon continues to wax.

7. Full Moon
You see the whole lighted side of the moon

8. Waning Gibbous
The moon appears to get smaller or, WANE

9. 3rd Quarter Moon
You see half of the lighted side of the moon

10. Waning Crescent
You see a crescent again.

11. New Moon
The Cycle begins again, 29.5 days later

13. Tides
The daily rise and fall of earth’s water on the coastlines.

14. Tides occur about every 12 hours and 25 minutes apart

15. Warmup: December 2, 2010 What Causes Tides?
Gravity between the Sun, Earth and Moon causes the tides

16. Spring Tides Occur twice a month at the new and full moon
These have the greatest range between high and low tides

17. Neap Tides
These occur at the 1st and 3rd quarter moon when the sun, earth and moon are at right angles to each other.

20. Low Tide

21. High Tide