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4 14 2017 moon phases notes
- 2. Standards & elements •S6E2. Students will understand the effects of the relative positions of the earth, moon and sun. • a. Demonstrate the phases of the moon by showing the alignment of the earth, moon, and sun. • b. Explain the alignment of the earth, moon, and sun during solar and lunar eclipses.
- 3. The Moon andYou Think about these questions… • Meet your moon. • Why can we see these phases? • What if you traveled to the moon? • How is the moon’s motion around the Earth observed?
- 4. Check what youknow: Does the Moon orbit the Earth? The Earth takes a year to orbit around the Sun. What about the Moon? Does it orbit the Earth? Circle the answer you think best describes the motion of the Moon. A. The Moon orbits the Earth about once a day. B. The Moon orbits the Earth about once a week. C. The Moon orbits the Earth about once a month. D. The Moon orbits the Earth about once a year. Uncovering Student Ideas in Astronomy pg 99
- 5. It takes 29.5days for the moon to revolve around the Earth and we always see that same side of the moon. (We never see the back side) INTRODUCTION
- 6. Different amounts ofsunlight light up the moon and, from Earth, makes the moon appear to have “different shapes” or phases. Why do we have MOON PHASES?
- 7. How big isthe Moon? • Wall-e Learns about Proportions
- 8. Summary from theClip How big is the moon? If Earth were a basketball, the Moon would be a baseball.
- 10. Check what youknow: Seeing the Moon How often have you looked up into the sky and seen the Moon? Put an X next to all the times when you think you can go outside and see the Moon. ____ in the morning ____ at noon ____ in the middle of the afternoon ____ in the evening before sunset ____ in the evening after sunset ____ at midnight Uncovering Student Ideas in Astronomy pg 91
- 11. What do wesee? The Phases of the Moon –New moon: (0% None reflected light) –Crescent: (1-49% partly but less than one- half illuminated by direct sunlight.) –Quarter: (50% half) Draw it Draw it! Draw it!
- 12. The Phases ofthe Moon –Gibbous: (51-99% more than one-half but not fully illuminated by direct sunlight. ) –Full moon: (100% ALL illuminated by direct sunlight.) Draw it! Draw it!
- 13. B. Phases ofthe Moon (Draw what the phase looks like in the boxes provided) 1. New Moon - earth cannot see any part of the moon (lasts one day) 2. Waxing Crescent - waxing means moon’s face is growing (lasts several days) 3. First quarter - right half of moon’s face is visible (lasts for only one day) 4. Waxing gibbous - more than 1/2 of moon’s face is visible (lasts several days) 5. Full moon – all of the moon’s face is visible (last for one day) 6. Waning gibbous - (last for several days) 7. Last quarter or Third quarter - left half of face is visible (lasts for only one day) 8. Waning crescent - waxing means moon’s face is shrinking (last for several days) New Moon
- 14. Why all thecrazywords for the moon phases? (Moon phase vocabulary) Most of these words are based in Latin or Greek (those dudes way back when that started doing science and observing space!) CRESCENT- Arc shape: a curved shape like a “C”. • GIBBOUS- think bulging outward or swollen for those two “b”s in the middle of the word. This shape is bigger than half, but less than full. WAXING- Think “Wax On” from Karate Kid. It means getting bigger. Light is being “added” and the moon is looking bigger each day. WANING- It means getting smaller. Since we say “Way-ning”…. I think of it as “going AWAY”. Moon appears to be “shrinking” each day.
- 15. Why do wesee “phases” of the moon? VIDEO= SEE END FOR DIRECTIONS! • Lunar Phase Simulator • Moon Phases BrainPoP • Animated picture of Moon phases
- 16. Check what youknow: Crescent Moon When there is a crescent Moon in the night sky, how much of the entire Moon’s spherical surface is actually lit by the Sun? Circle the answer that best matches your thinking. A. Quarter or less of the entire Moon B. Half of the entire Moon C. Three quarters of the entire Moon D. The entire Moon Uncovering Student Ideas in Astronomy pg 127
- 17. Check what youknow: Moon Phase and Solar Eclipse During a solar eclipse the Moon appears to completely cover the Sun. What phase is the Moon in just before and after a solar eclipse? Circle the answer that best matches your thinking. A. Full Moon B. New Moon C. First quarter Moon D. Last quarter Moon E. It can be any phase. Now, draw a diagram of where the Earth, Moon and Sun will be during a SOLAR eclipse. Uncovering Student Ideas in Astronomy pg 109
- 19. Cause: The moon passesbetween the sun and the Earth. Effect: The moon blocks out the sun. Does a large area of the Earth see a total solar eclipse? How do you know?
- 20.
- 21. Solar Eclipses • Sun– the shadow of the moon on the earth Total solar eclipse in 1999
- 22. Cause: Earth passes betweenthe sun and the moon Effect: Earth’s shadow falls on the moon.
- 23. What is alunar eclipse? • Now imagine what happens when you have the sun, the Earth, and the moon all lined up in a row. When the moon is all the way in the umbra shadow, it is a total lunar eclipse. Total lunar eclipses last around 20 minutes to an hour and 40 minutes
- 24. A – totaleclipse B – annular eclipse C – partial eclipse
- 25. Eclipses • Have youseen eclipses? • What are eclipses in nature? – One celestial object casts its shadow on the other one • Umbra: Inner core of total darkness the disc of the Sun is completely blocked. • Penumbra: Outer, partial shadow Sun's disc is only partly blocked, with a bit peeking over the edge.
- 26. What’s the moonphase when a solar eclipse occurs? What’s the moon phase when a lunar eclipse occurs? New Moon Full Moon
- 27. Penumbra & Umbraillustration
- 28. Why aren’t theresolar eclipses and lunar eclipses on EVERY new moon and full moon?
- 29. Two conditions mustbe satisfied for an eclipse to occur 1.The nodes of the moon’s orbit must be nearly aligned with the Sun and the Earth 2.The phase of the moon must be new or full
- 30. Check What YouKnow: Phases of Earth Name the phase of the Earth in this picture.
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