1. Moon Phases and eclipses
8th grade

2. REVIEW…
Moon rotates on its axis and revolves around the earth while the earth revolves around the sun
It takes 27 EARTH days for the moon to rotate on its axis
It takes 29.5 EARTH days for the moon to revolve around the earth (one month)

4. REMEMBER… The moon DOES NOT create it’s own light.
Any time we see the moon it is because the Sun’s light is reflecting off of it.
This causes the moon to appear to change shape

7. WHY DOES THE MOON CHANGE SHAPE? (video)

10. Moons follow a certain order Waxing = light on the right Waning = light on the left

11. N is on the left side of the alphabet and X is on the right side
Waning vs. Waxing
HOW CAN I REMEMBER IT? If you were to write out the alphabet… ABCDEFGHIJKLMNOPQRSTUVWXYZ
N is on the left side of the alphabet and X is on the right side
waNing = LIGHT on the LEFT waXing = LIGHT on the RIGHT

12. New moon The Moon is between the Sun and the Earth
The lit side of the moon cannot be seen on Earth
To us, there appears to be NO Moon in the night sky.
New Moon = NO moon

13. New Moon positioning…

15. Waxing Crescent
Less than half of the sunlit portion of the moon is visible from Earth
Looks like a “fingernail” or “banana”

17. First Quarter
The moon looks lit on only one half from Earth

19. Waxing Gibbous
More than half of the sunlit portion of the moon can be seen from Earth

21. Full Moon The entire lit portion of the Moon is facing the Earth
The Earth is positioned between the Sun and Moon.

22. Full Moon positioning…

24. Waning Gibbous
Same as Waxing Gibbous except the light is seen on the LEFT side of the moon
More than half of the sunlit portion of the moon can be seen from Earth

25. Third Quarter Also known as “last” quarter
Same as first quarter except the light is seen on the LEFT side of the moon
The moon looks lit on only one half from Earth

26. Waning Crescent
Same as waxing crescent except the light is seen on the LEFT side of the moon
Less than half of the sunlit portion of the moon is visible from Earth
Looks like a “fingernail” or “banana”

27. CAUTION!!!!!
Whenever you see a diagram, pay close attention to which side the sunlight is coming from…This will determine where the moon phases are.
Compare this diagram with the one on the front and notice the differences – even though the order of the phases is the same, the positions change

28. Exit Ticket
Tell me the difference between a waxing and waning moon

29. Eclipses
Eclipses occur when a space object blocks another object from view

30. Solar Eclipse
When the moon passes between earth and the sun and blocks the sun’s light from earth.

32. Lunar Eclipse
earth passes between sun and moon and blocks the suns light.
earths shadow hits the moon causing a shadow over the moon.

34. To the lab!! Exploring eclipses in the lab!
Working independently at WHISPER LEVEL

35. Exit Ticket 12/10
In which type of eclipse does the Earth pass between the sun and moon?

36. Catalyst 12/11
In what type of eclipse does the moon pass between the earth and the sun?

37. WHAT CAUSED THIS?

38. Tides
The rise and fall of the ocean level caused by gravitational effect of the moon
Water closest to the moon will bulge on both sides of the earth causing high tides and low tides
High and low tide = every 24 hours

40. Spring Tides = when sun and moon are aligned, high tides are higher and low tides are lower
Neap tides = when the sun and moon are at right angles to each other, the high tides and low tides aren’t as intense

43. Exit Ticket
Draw a diagram of the earth, moon, and sun location during spring tides
Draw a diagram of the earth, moon, and sun location during neap tides

44. Review
Two groups of students were tested to compare their speed working math problems. Each group was given 5 problems. One group used calculators and the other group did not use calculators.
Independent variable ____________
Dependent Variable ____________
Constants _______________