Ally S Section_3-3[1][1]

SECTION 3-3

By: Allison Stone, Kayla Bertini, Danny Johnstone, and Brady McInnis.

THE EARTH, THE MOON, AND THE SUN 

The relative motions of the Earth, the Moon, and the Sun result in the changing appearance of the moon as seen from the Earth and the occasional blocking of the sun’s light.

PHASES OF THE MOON 

The revolution of the moon causes the moon to appear to change shape in the sky.

The moon goes through all it’s phases every 29.5 days.  About a week after the new moon, the moon has traveled a quarter of the way around the earth, this phase is the first-quarter stage.  About two weeks after the new moon, the entire lighted side of the moon is visible in the sky. This phase is called the full moon. 

The moon takes another two weeks to pass through the waning-gibbous, last-quarter , and waning-crescent phases, and back to the new moon.  The phases of the moon then start over again.  As the moon revolves around the earth and the earth and the moon together revolve around the sun, they occasionally block out some of the sun’s light.  The two types of eclipses are named depending on which body the sun or moon is eclipsed , or blocked. 