lunar cycle goal: identify the phases of the moon, and relate the phases to eclipses
TRANSCRIPT
Lunar CycleLunar CycleGoal: Identify the phases of the Moon, and
relate the phases to eclipses.
Memory Devices:Memory Devices:
White on the right, growing bright!
White on the left, losing light!
Memory Devices:Memory Devices:
Wax on – increasing light! ◦Just as a candle wick is dipped in wax and the candle wax increases the size of the candle.
Wane off – decreasing light!
Gibbous – bulge
Memory Devices:Memory Devices:
New Moon = Near the Sun
Full Moon = Far from Sun
Remember, YOU are on the EARTH looking at the Moon.
New Moon
The new moon phase occurs when the Moon is between the Sun and the Earth.
When this occurs, there is a possibility of having a solar eclipse.
Solar eclipses do not happen each month because the orbit of the Moon is 10o off from the orbit of the Earth.
Waxing Crescent
The Moon revolves around the Earth.
Waxing means to increase in size. This refers to the lit portion of the Moon.
Crescent refers to the shape.
First Quarter
When the Moon has gone one fourth of the way around the Earth, it is called the first quarter.
From our point of view, the right half of the Moon is lit.
Waxing Gibbous
The gibbous phase looks like a fat football.
The word gibbous means bulging.
During the waxing gibbous phase, the lit side of the Moon continues to grow in size.
Full Moon
During the full moon, we see the light reflecting from the entire surface of the Mmoon facing the Earth.
During this phase, it is possible to have a lunar eclipse.
Waning Gibbous
Waning means to decrease in size.
During the waning phase of the Moon, the lit portion decreases in size.
The waning gibbous occurs after the full moon.
Third Quarter
The third quarter has the lit side on the left.
The Moon is three fourths of the way around its orbit.
Waning Crescent
The waning crescent gets smaller and smaller, until the Moon completes its orbit and begins a new cycle with another new moon.
Solar EclipseSolar Eclipse
The Moon moves directly between the Sun and Earth. The Moon casts a shadow on the Earth; only occurs with a new moon.
This does not occur with every new moon due to the moon being 10o off from the orbit of the Earth.
Lunar EclipseLunar Eclipse
The Earth, Sun, and Moon are directly lined up in the center. The Earth casts a shadow on the Moon; only occurs with a full moon.
This does not occur with every full moon due to the Moon being
10o off from the orbit of the Earth.
Memory Devices:Memory Devices:
White on the right, growing bright!
White on the left, losing light!
Memory Devices:Memory Devices:Wax on – increasing light!
◦Just as a candle wick is dipped in wax and the candle wax increases the size of the candle.
Wane off – decreasing light!
Gibbous – bulge
Memory Devices:Memory Devices:New Moon = Near the Sun
Full Moon = Far from Sun
Remember, YOU are on the EARTH looking at the Moon.
Review:What phase is this? Be prepared to Justify your answer.
First Quarter
What phase?What phase would be next?
New Moon
Waxing Crescent
What phase?What phase would be next?
Waning Gibbous
Third Quarter
What phase?What phase would be next?
Full Moon
Waning Gibbous
What phase?What phase would be next?
Waxing Crescent
First Quarter
What type of eclipse could occur during this phase?
Lunar Eclipse
What phase?What phase would be next?
First Quarter
Waxing Gibbous
What phase?What phase would be next?
Waning Crescent
New Moon
A View From Outer SpaceA View From Outer Space
What is different from our view on Earth?
A View From Outer SpaceA View From Outer Space
• Would you still be able to label the phases without seeing them?
• This type of question
and graphic is quite common on
assessments.
Moon Phase Graphic OrganizerMoon Phase Graphic Organizer