1. The Moon, Tides, and Eclipses

2. Tides

3. What is a tide? The rise and fall of the sea level.
Caused by the gravitational pull of the Sun and the Moon.
There are 2 high tides and 2 low tides daily.

4. Affect of Gravity on tides-
The moon’s gravity exerts a strong pull on the Earth causes the water to bulge outward at places.
The bulges of water are high tides & non-bulges are low tides.

5. Spring Tides-
When there is the greatest difference between high and low tides (high-highs and low-lows).
Occurs when moon is in a straight line with sun and Earth= New moon and Full moon.

6. Neap Tides-
When there is the little difference between high and low tides (almost equal).
Occurs when moon is at 90° with sun and Earth= 1st and 3rd quarter.

7. What is an Eclipse?
When Earth or the Moon
temporarily blocks the sunlight
from reaching the other.

8. Two Types of Eclipses-
Solar Eclipse- Moon comes between Sun and Earth and casts a shadow on Earth.
Lunar Eclipse- Earth comes between the Sun’s light and the moon and blocks the light from the moon.

9. Shadows of Eclipses- Umbra- Darkest part of a shadow.
Penumbra- lighter portion of a shadow.

10. Solar Eclipse A solar eclipse can only occur when the moon
is in its “new moon” phase.

11. Total and Partial Solar Eclipses

12. Total Solar Eclipse
Total- an eclipse as seen from a particular area of the earth's surface where the eclipsed body is completely hidden

13. Bailey’s Beads
The Baily's beads effect is a feature of total solar eclipses. As the moon "grazes" by the Sun during a solar eclipse, the rugged lunar limb topography allows beads of sunlight to shine through in some places, and not in others

14. Bailey’s Beads

15. Diamond Ring
The diamond ring effect is seen when only one bead is left; a shining diamond set in a bright ring around the lunar silhouette.

16. Annular Eclipse
Annular- an eclipse of the sun in which the moon does not cover the entire disc of the sun, so that a ring of sunlight surrounds the shadow of the moon

18. Solar Eclipse
Partial-An eclipse in which the part of the surface of a celestial object is obscured
August 21st 2017
Next date- in Texas
October 14th 2023-Annular
April 8th 2024-Total

19. Know 1st, 2nd, 3rd and 4th contact

22. Lunar Eclipse A lunar eclipse can only occur when the moon
is in its “full moon” phase.

23. Total Lunar Eclipse
Lunar eclipses occur because of the moon’s tilted orbit and only occur a couple times in a year
Jan. 31st 2018

24. http://www. space. com/18480-solar-eclipse-moment-of-totality-video