1. Tides & Eclipses
©Mark Place,

2. What are tides?

5. Does Lake Erie have tides?
Um, no.
Lake Erie can experience a seiche that is caused by winds, but not tides…
Too small.

6. What causes tides?
They are caused by the gravitational pull of the moon and the sun.
The moon’s pull is stronger because it is closer.

7. Based on the Diagram, which are larger? SPRING TIDES
Because the sun and moon are pulling in the same direction.

8. So…
During which moon phases would the spring tide occur?

9. New & Full Moon

10. Neap Tides?
1st & 3rd Quarter

11. How many tides a day?
2 high tides
2 low tides

12. Why are there not exactly
12 hours between tides?
because the moon
revolves around
the Earth while the
Earth rotates

14. solar and lunar eclipses?
What’s the
difference between
solar and lunar eclipses?
Solar
Lunar
Earth goes
into moon’s
shadow
moon goes
into Earth’s
shadow

15. Solar Eclipse 2017

16. Solar Eclipses through 2030

18. Next Lunar Eclipse:
January 31, 2018

19. solar and lunar eclipses
Why don’t we have
solar and lunar eclipses
every month?
The moon’s orbit is
tilted 5° from the
Earth’s orbit.