1. The Moon Expectations: 1) Describe some characteristics of the Moon
2) Describe how high tide and low tide occurs
3) Explain why we have different phases of the Moon and what causes this phenomena

2. The Moon Earth’s natural satellite.
The moon rotates on its axis and revolves around Earth in the same amount of time, therefore we only ever see one side of the moon. (about a month)
The moon is held in orbit by the gravitational force the same as the planets around the sun.

3. Moon Facts
No atmosphere, therefore very hot or cold depending on the position with the Sun.
Gravity on the moon is 1/6 of Earth’s.
The moon is illuminated by the Sun.
The light or dark always moves right to left.
Why do we see phases of the moon??

4. Moon Phases –Lunar Cycle

5. Explanation of Moon Phases

6. Tides
Tides are due to the Moon’s gravitational pull on Earth and it’s oceans. As Earth is pulled toward the Moon, a bulge of water also forms on both sides of Earth (high tide), other sides will be low tide.
There are two high and low tides each day. The time between high and low tide is about six hours.
The Sun also affects tides but not as much, when the Sun, Moon and Earth are aligned it causes spring tides (high tides), when perpendicular- neap tides (weaker)

7. Tides

9. Eclipses
Occur when the position on one celestial object blocks or darkens the view of another celestial object.
The Sun has a diameter 400 times greater than the Moon, but it is also 400 times farther from Earth. Therefore the Sun and Moon appear the same size in the sky.

10. Solar Eclipse
Only the outer atmosphere of the Sun, the corona is visible.
To view the total eclipse you need to be within the lunar shadow path which is only a few dozen kilometers wide.
Always view solar eclipses with a solar filter or by projection, the rays from the Sun will damage you eyes.

12. Solar Eclipse

13. Lunar Eclipse The Moon passes through Earth’s shadow.
It may be viewed anywhere on Earth when the Moon is visible.

15. Lunar Eclipse

16. Why the colour?
Lunar eclipses can appear orange or red due to the refraction of sunlight as it passes through Earth’s atmosphere. (Think sunsets.)

17. Where must the Moon be for a solar eclipse to take place?
During a solar eclipse the Moon blocks the Sun’s rays from reaching part of the Earth.
During a solar eclipse the Moon moves directly between the Sun and the Earth.
Where must the Moon be for a solar eclipse to take place? 17

18. During a lunar eclipse the Earth blocks the Sun’s light
from reaching the Moon.
During a lunar eclipse the Moon is on the opposite side of
the Earth to the Sun.
Where must the Moon be for a lunar eclipse to take place? 18

19. Homework Phases of the Moon worksheet. Eclipses worksheet.
Read about Satellites Page
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