week 5. lunar cycle the 28 day period in which the moon’s orbit around the earth causes it to...

Week 5

lunar cycle

the 28 day period in which the moon’s orbit around the Earth causes it to reflect the sun in different phases

crater

a bowl-shaped structure at the top of a volcano or on a planet or moon

gravity

the force that pulls objects toward each other

tilt

to lean, tip, or slant to one side

axis

an imaginary line that passes from the North Pole to the South Pole through

Earth’s center

full moon

the phase of the moon when the side turned toward the earth is entirely lit

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

quarter moon

the phase of the moon when one quarter (one- fourth) of the face turned toward the

Earth is lit

new moon

the phase of the moon when the side turned toward the earth is entirely dark

rotation

the spinning of a planet or moon on its axis

revolution

one complete trip of a planet around the sun

orbit

the path that one object in space takes around another object in space

waxing

The moon at any time after new moon and before full moon, so called because its

illuminated area is increasing

waning

The moon at any time after full moon and before new moon, so called because its illuminated area

is decreasing.

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