week 5. lunar cycle the 28 day period in which the moon’s orbit around the earth causes it to...
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Week 5
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lunar cycle
the 28 day period in which the moon’s orbit around the Earth causes it to reflect the sun in different phases
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crater
a bowl-shaped structure at the top of a volcano or on a planet or moon
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gravity
the force that pulls objects toward each other
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tilt
to lean, tip, or slant to one side
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axis
an imaginary line that passes from the North Pole to the South Pole through
Earth’s center
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full moon
the phase of the moon when the side turned toward the earth is entirely lit
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half moon
the phase of the moon when one half of the face turned toward the Earth is lit- can be either side depending on whether it is waxing or waning
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quarter moon
the phase of the moon when one quarter (one- fourth) of the face turned toward the
Earth is lit
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new moon
the phase of the moon when the side turned toward the earth is entirely dark
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rotation
the spinning of a planet or moon on its axis
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revolution
one complete trip of a planet around the sun
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orbit
the path that one object in space takes around another object in space
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waxing
The moon at any time after new moon and before full moon, so called because its
illuminated area is increasing
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waning
The moon at any time after full moon and before new moon, so called because its illuminated area
is decreasing.
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Slide 2: http://paganinstitute.org/images/Astronomy/lunar_orbit&phases.jpg
Slide 3: http://laps.fri.uni-lj.si/~duke/HPpictures/crater.jpg
Slide 4: http://www.adlerplanetarium.org/education/resources/gravity/img/gravity.jpg
Slide 5: http://www.2012-online.net/images/AxialTilt_1.jpg
Slide 6: http://www.chanceandchoice.com/ChanceandChoice/earthinclined.jpg
Slide 7: http://www.cs.princeton.edu/~jhalderm/pics/pu0001/m/full_moon.jpg
Slide 8: http://www.northrup.org/Photos/moon/low/half-moon.jpg
Slide 9: http://quartermoonbows.com/Photos/trimquartermoon.JPG
Slide 10: http://www.siennasoft.com/stargazer/images/1557OldMoon-NewMoon.jpg
Slide 11: http://www.hort.purdue.edu/newcrop/tropical/lecture_02/02m.jpg
Slide 12: http://www.teslasociety.com/pictures/solar10.jpg
Slide 13: http://cse.ssl.berkeley.edu/Segwayed/lessons/cometstale/images/orbit_med.gif
Slide 14: http://www.globalsecurity.org/military/ops/images/Moon_waxcres.gif
Slide 15: http://www.globalsecurity.org/military/ops/images/Moon_wancres.gif