Moon phasesEclipses

(Section 2.3 in textbook)

Goals & Outcomes

• Appreciating science in general, and astronomy in specific.• Developing a working knowledge of the scientific method

and how to apply it to real world situations. • Critically analyzing and evaluating information, scientific

or otherwise• Diagram the positions of the Sun, the Earth, and the Moon

during solar and lunar eclipses.• Predict the phase of the Moon that would be seen in the

sky, given the positions of the Earth, the Sun, the Moon, and the observer.

Overarching questions

• What are the names of the Moon’s phases?

• What causes these phases?

• What causes eclipses? What does the Moon look like during eclipses?

• Telling time & direction from the Moon.

• Are there phases on other worlds?

Moon’s orbit

• Moon’s size = • Earth’s size = • Moon’s orbit distance = • Inclination of the orbit = • From California Science Standards, grade 3

– Students know the way in which the Moon's appearance changes during the four-week lunar cycle.

Phases & names – see page 43

Moon phase today

• Which direction is the Sun right now?

• Where is the Earth’s shadow?

• What is the phase of the Moon today?

• Go outside with golf ball and see phase of golfball today.

Ping Pong demo – phases part 1• Using:

– the light bulb as the Sun– Ping pong ball as Moon.

• If brand name appears = near side.

– YOU as ENTIRE Earth

• Picture on textbook p. 43 will help with visual aid.

• Create new Moon.• Create waxing crescent• Look at Lecture Tutorial workbook on page

79, #1. Which phase is that? Answer the question. 1 minute.

Question 1 on page 79 of workbook.

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0 1. A

2. B

3. C

4. D

5. E

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Ping Pong demo – phases part 2

• Review:– make a new moon.– Waxing crescent

• Other phases:– First quarter … follow teacher prompt through all

phases.

• Lecture tutorial, pages 79-80. Do remaining questions. 10 minutes.

Ping Pong demo – phases part 3

• Demonstrate starting at one new moon and going through a cycle to the next new moon.

• How long does it take to do that?• How long does it take to go new -> 1st

quarter?• How long from 1st quarter to full?• How long from waxing crescent to waning

crescent?

How long between 1st quarter and full moon?

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0 1. 1 day

2. 1 week

3. 2 weeks

4. 3 weeks

5. 1 moonth

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How long from waxing crescent to waning crescent?

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0 1. 1 day

2. 1 week

3. 2 weeks

4. 3 weeks

5. 1 moonth

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Today the Moon is one day after Full Moon. What will it be tomorrow?

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0 1. New2. Wax crescent3. 1st quarter4. Wax gib5. Full6. Wan gib7. 3rd qtr8. Wan cresc.

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Sun stuff

• Review Sun directions at various times.– Sunrise: time = _________, direction _____– Sunset: time = __________, direction _____– Middle of day: time = ________, Sun direction __– _______________________________________

• Lecture tutorial, pages 83-85. 12 minutes.

Ping Pong demo – eclipses• What is a total lunar eclipse? What phase is

the Moon? Is it always that phase?

• What is a total solar eclipse? What phase is the Moon? Is it always that phase?

• Eclipses discussed in textbook, pages 45-49

Facing the Moon, finding the Sun

• Which direction would you have to turn to see the Sun if you saw these pictures:

• 1. How much would you turn?

• 2. How much would you turn?

• 3. How much would you turn?

• 4. How much would you turn?

• Lecture tutorial, pages 83-85.

What you should be able to doGiven a picture of the Moon, name of phase

or eclipse, complete all of the following:1. Draw picture and name each phase

2. How much of the Moon is lit, and how much of the lit part we see? Why is the dark part not lit?

3. If facing the Moon at any phase, which way (right/left/behind) do you turn to face the Sun? Name direction (NSEW)

4. Approximate time, based on the Moon’s phase and location in the sky

Clicker questions coming

My advice:

1. Take out some notebook paper.

2. I will fill in the blanks on the board. Copy info down.

3. Write your guess someplace off to the side so you can cover up your answer when you study your notes

4. Write the correct answer in another place you can cover up, NOT immediately next to your first guess.

5. This will make it hard for you to peek at the right answer when studying your notes

What time is it when the moon is ____ and located in the ___ sky.

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0 1. 6am

2. Noon

3. 6pm

4. midnight

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What Moon phase rises at 6pm

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0

0

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0 1. New

2. 1st quarter

3. Full

4. 3rd quarter

5. All of them

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If the Moon is _____ what will it look like one week later?

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0

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0 1. New2. Waxing crescent3. 1st q.4. Waxing gibbous5. Full6. Waning gib7. 3rd q8. Waning crescent1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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What time is it when the moon is ____ and located in the ___ sky.

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0

0

0 1. 3am

2. 9am

3. 3pm

4. 9pm

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Which one would appear closer to the Sun?

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1.

2.

3.

4.

What time is it when the Moon is _____ and in the ____

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0 1. Midnight2. 3am3. 6am4. 9am5. Noon6. 3pm7. 6pm8. 9pm1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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Where is the ____ moon at ____?

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0 1. East

2. South

3. West

4. North (below ground)

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Can you see a waxing crescent during daytime?

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0 1. Yes

2. No

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Can planets show phases?

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0 1. Yes

2. No

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Could the first quarter Saturn picture in this classroom be taken from Earth?

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0 1. Yes

2. No

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