astronomy earth’s moon bellwork in 1998, the lunar prospect mission showed that there could be...
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Astronomy Earths Moon
BellworkIn 1998, the Lunar Prospect mission showed that there could be water on our moon. The craters near the poles may contain as much as 300 million metric tons of ice. The ice can only exist in the shadowed regions because the daytime temps can reach 134 degrees Celsius. In your notebook write at least one paragraph describing a how we could capture some of the ice and bring it back to Earth.
Moon FactsRevolves around the earth1 rotation around earth is 27.3 days1 rotation on its axis is also 27.3 daysThis is the reason why we only see 1 side of the moon.Shines by reflecting sunlight from its surface
Phases and Rotation of the Moon
What are Moon Phases?Changing appearances of the moon as seen from earth.Phase depends on relative positions of the moon, earth and sun.Moon phases cycle takes 29.5 days
PhasesTermsWaxing- Phase when sunlit face is getting biggerWaning- Phase when sunlit face is getting smallerGibbous- Phase when more the half of it face is showing. Crescent- Phase when a of its face is showingFull- Phase when all of moons face is lit
Phases of the moon
New MoonNot seen
Why is a new moon not seen?
The reason we don't see any light on the moon during a new moon is because the far side of the moon is getting all the light, while the side we see is cast completely in shadow. When we have a full moon it's because the moon is facing us AND the sun, so we see its light reflected fully. The other phases are the stages in between.
Waxing CrescentAfter new moon, more and more of moon is visible. Banana shaped
1st QuarterHalf is seen
Waxing Gibbous is seen
Full Moon All is seen
Waning Gibbous is seenAfter the full moon, less is visible
last QuarterLeft Half is seen
Waning CrescentBanana shaped
Waxing CrescentFirst QuarterFull MoonWaxing GibbousLast QuarterWaning GibbousWaning CrescentNew Moon12
EclipsesHow do eclipses occur?Revolution of the moon causes themOccur when earth or moon temporarily block the sunlight from reaching the other
Eclipses can occur only when the sun, moon and earth are perfectly lined up.When can eclipses occur?
Moonmoves BetweenSun and earth
What is a Solar Eclipse?
Effects of MotionSolar Eclipse When the Moon passes between the Sun and Earth causing the Moons shadow to fall on the Earth.
What is aLunar Eclipse?Earth moves between the moon and the sun
Lunar Eclipse When the Earth passes between the Sun and Moon causing the Earths shadow to fall on the Moon.
Lunar Eclipse on March 3, 2007
Igneous rocks of the maria are thought to be 3-4 billion years old (youngest rocks found on moon surface).
Theories about the moons originCaptured by earths vicinityCondensed from loose material surrounding earth during early formation of the solar systemBlob of molten material was ejected from earth while earth was still in its early molten stage
Apollo missions led many scientists to support the impact theory- Moon was formed 4.6 billion years ago when a Mars-sized object collided with earth. Gas and debris was thrown into orbit then condensed into a single mass, forming the moon.
Origins of the Moon
Surface of the Moon
The Formation of the Moon
Section 4Copyright by Holt, Rinehart and Winston. All rights reserved.
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