1. Moon Phases, Eclipses, Tides and Seasons

2. The New Moon The new moon is totally dark
When the moon is between the sun and the earth its sunlit side is turned away from the earth
Earthshine (sunlight reflected off the earth towards the moon) can dimly illuminate the totally dark moon

3. On the way to Full we Wax The phases on the way to full
Waxing Crescent (less than half lit)
First quarter
Waxing Gibbous (more than half lit)
Full

4. From Full to New we Wane The phases on the way to new
Waning gibbous (more than half lit)
Last quarter
Waning crescent (less than half lit)
New

5. The Phases Illustrated

6. Moon Phases Recap

7. Eclipses
The partial or total blocking of one object in space by another.

8. Shadow vocabulary Penumbra: The larger, less dark portion of a shadow.
Umbra: The smaller darker portion of a shadow.

9. Main Types of Eclipses
Solar
Lunar

10. Solar Eclipses
The blocking of sunlight to Earth that occurs when the moon is directly between the sun and the earth.

11. Lunar Eclipses
The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon.

12. Partial Eclipses
Lunar
Solar
Annular

13. Partial Lunar Eclipse
Occurs when the sun, earth and moon are not quite in line.
Occurs when the moon passes partly into the umbra of Earth’s shadow.

14. Partial Solar Eclipse
Where people in the penumbra can still see an extremely bright portion of the sun.

15. Annular Eclipse
When the moon is farther away from the Earth, and appears smaller and cannot quite cover the entire sun.
A ring appears
Type of partial solar eclipse

16. Tides
Caused mainly by differences in how much the moon’s gravity pulls on different parts of the earth.
The periodic rise and fall of the level of water in the ocean.

17. Types of Tides Spring Tide Neap Tides

18. Differences in tides

19. Types of Tides Daily Ocean Tides Occur Twice Daily
Tides happen about every 12.5 hours
2 high tides
2 low tides

20. Questions….
During which moon phase does a spring tide occur?

21. Full Moon and New Moon

22. Questions….
During what moon phase does Neap tide occur?

23. First Quarter and Third Quarter

25. Questions….
What type of tide occurs when it is not a full, new, 1st quarter, or 3rd quarter moon?

26. Answer
The tides will continue to rise and fall with the gravity of the moon at regular 6 hrs rising and hrs falling.
Regular Cycle

27. Questions….
How often do Neap Tides occur?

28. Questions….
How often do Spring Tides occur?

29. Seasons
The tilt is the reason for the season!

30. Seasons