Ch. 17Lesson 2

What patterns can you see in the sky?

Moon• Orbit around Earth= ellipse

• Revolution= 27.3 days

• Rotates on axis= 27.3 days

The same side of the Moon is always facing Earth.

phasesphases

• different shapes of moon you see from Earth

• Moon does not produce own light- reflects sunlight

• depends on how much of sunlit side of moon faces Earth

Phases of the Moon animation

Phases of the Moon Activity-Using Oreos

• Materials: four Oreo cookies, plastic knife, long blue construction paper

1.On a paper plate, make a chart showing New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Third Quarter, and Waning Crescent, using Oreos.

2.With your knives, scrap away the frosting to represent each phase.

3.Draw the phases in your notebook.

NASA eClips video-Our World- The Moon

eclipse

solar eclipse lunar eclipse

object in space comes between sun & 3rd object-

casts shadow on that object

•moon between Earth & sun•Moon casts shadow on Earth

•Earth between moon & sun•Earth’s shadow

blocks sunlight from moon

lunar eclipselunar eclipse

partial lunar eclipse total lunar eclipse

stars• Hot balls of gases

• 1 billion, trillion stars

Sun• medium sized star

• can’t see stars during day

constellation•star patterns

•88 constellations

constellations•appear to rise in east & set in west b/c Earth rotates on its axis

OrionOrion

This is Orion the hunter. You can see him in winter.