A look at the movements of the Moon Moon Phases A look at the movements of the Moon Leesa Hubbard Teacher in Residence Sally Ride Science

Movements of the Moon Revolution – Moon orbits the Earth every 271/3 days The moon rises in the east and sets in the west The moon rises and sets 50 minutes later each day Rotation – Moon turns on its axis every 27 days Same side of Moon always faces Earth

It’s Just a Phase Moonlight is reflected sunlight Half the moon’s surface is always reflecting light From Earth we see different amounts of the Moon’s lit surface The amount seen is called a “phase”

Limb Terminator The line where the surface of the moon meets the sky. The imaginary line between the reflected light and shadow.

Waxing and Waning New moon Waxing Crescent moon First Quarter moon Waxing Gibbous moon Full moon Waning Gibbous moon Third Quarter moon Waning Crescent moon

FOUR MAIN SHAPES FULL Four Basic Shapes CRESCENT GIBBOUS QUARTER

Orbits (revolves around) Earth every 27.3 days Elliptical orbit (not a perfect circle) About 384,000 km (240,000 miles) from Earth 360,000 km 406,000 km 224,000 miles 252,000 miles

Moon rise times: The New Moon always rises at sunrise Moon rise times: The New Moon always rises at sunrise. The first quarter Moon rises at noon. The Full Moon rises at sunset. The last quarter Moon rises at midnight. Moonrise takes place about 50 minutes later each day than the day before.

The Lunar Challenge!

Name this phase! Full Moon What time does this phase rise and set?

Is this line the limb or terminator?

Name this phase! First Quarter

Name this phase! Waxing Crescent

Name this phase! Waning Gibbous

Name this phase! Third Quarter

From what direction does the moon rise? The East

Name this phase! Waxing Gibbous

Name this phase! Waning Crescent

Is this line the limb or the terminator?

Name this phase! Look closely! Waxing Gibbous

Name this phase! Full Moon

Name this phase! New Moon

Does the moon rise or set in the west? It sets in the west.

Name this phase! Waning Gibbous

Name this phase! Waning Crescent

Photo resources http://www.nasm.si.edu/apollo/AS15/a15images.htm http://nssdc.gsfc.nasa.gov/photo_gallery/photogallery-moon.html#apollo http://clementine.cnes.fr/index.en.html http://cass.jsc.nasa.gov/pub/research/clemen/clemen.html http://spaceflightnow.com/news/n0108/15mooncreate/ http://seds.lpl.arizona.edu/nineplanets/nineplanets/pxmoon.html

More photo resources http://www.nrl.navy.mil/clementine/clemovies/clemovies_index.html http://www.solarviews.com/eng/moon.htm http://news.bbc.co.uk/1/hi/sci/tech/620649.stm http://skyandtelescope.com/observing/objects/eclipses/article_99_1.asp http://lunar.arc.nasa.gov/results/ice/eureka.htm http://www.space.com/scienceastronomy/solarsystem/moon_nss_020604.html