Phases Of The Moon - Norwell High School

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May 28, 2015Phases, Eclipses, and Tides

May 28, 2015Key Concepts:What causes the phases of the moon?What are the solar and lunar eclipses?What causes the tides?

May 28, 2015Key Termsphaseslunar eclipseeclipsetidesolar eclipsespring tideumbraneap tidepenumbra

May 28, 2015Motions of the MoonMoon Movement- revolves around the Earth- rotates on its own axisIn this rotation the position of the moon, Earth, and sun changeand cause the phases of the moon, eclipses, and tides

May 28, 2015Motions of the MoonMoon rotates ONCE on axis in the SAME amount of time thatit revolves around the Earth-1 "day" on Earth 1 "year" on the moon- same side of the moon always faces the Earth- 29.5 Earth "days" between full moons

May 28, 2015Phases of the Moon-Moon does not produce light, reflects light from the sun like amirror-different shapes of the moon you see from Earth phases-phases are caused by the relative positions of the moon, Earth,and sun.-the phase of the moon you see depends on how much of thesunlit side of the moon faces Earth

May 28, 2015New Moonsunlit side faces away from Earth, making it appear that there isno moon in the sky

May 28, 2015Phases of the Moon WaxingCrescentportion of the moon you can see is waxing (growing) into acrescent shape - the light is reflected on the right side of themoon

May 28, 2015Phases of the MoonFirst QuarterYou can see half of the sunlit side of the moon (light appears onthe right side)

May 28, 2015Phases of the MoonWaxing GibbousThe moon continues to wax ("grow") and the visible shape ofthe moon is called a gibbous

May 28, 2015Phases of the MoonFull MoonThe entire sunlit side of the moon faces the Earth

May 28, 2015Phases of the MoonWaning GibbousThe portion of the moon you can see wanes (shrinks)

May 28, 2015Phases of the MoonThird QuarterYou can see half of the moon's lighted side (on the left)

May 28, 2015Phases of the MoonWaning CrescentYou see the crescent on the left side

May 28, 2015Phases of the Moon view from space

May 28, 2015Reading Check: What is a new moon?

May 28, 2015EclipsesIn most months, the moon revolves around the Earth without aneclipseAn eclipse occurs when.The moon's shadow hits Earth or Earth's shadow hits the moon.

May 28, 2015EclipseWhen an object in space comes bet ween the sun and a third object, itcasts a shadow on that object.

May 28, 2015Solar EclipseWhen a new moon passes directly between the Earth and sun,blocking sunlight from the Earth and causing the moons' shadowto hit the EarthOccurs when a new moon blocks your view of the sun

May 28, 2015Geometry in Science!Materials Needed: graph paper, ruler, pencilVocabulary: Diameter - any straight line segment that passes throughthe center of a circle (Earth & the moon)Measurements needed:Earth's diameter 1 cm (this is NOT to scale)Moon's diameter about one fourth Earth's diameterDistance from Earth to moon about 30 times Earth's diameterDirections: draw the moon, Earth, and the distance between them.From the edges of the moon, draw and shade in a triangle thatrepresents the moon's umbra

May 28, 2015Total Solar EclipsesThe umbra is the darkest part of the moon's shadow**Only people on Earth within the umbra experience a totalsolar eclipse**UMBRA

May 28, 2015Total Solar Eclipses- sky grows as dark as night-air gets cool-sky becomes an eerie color-can see the stars and solar corona (faint outeratmosphere of the sun)

May 28, 2015Partial Solar EclipsePenumbra - the larger part of the shadow in a solar eclipsethat is less dark than the umbra

May 28, 2015Partial Solar EclipseDuring a solar eclipse, the people in the penumbra only see apartial eclipseSun that is visible is EXTREMELY bright and dangerous tolook at!

May 28, 2015Lunar EclipseOccurs at a full moon when the Earth is directly between thesun and the moon.During a lunar eclipse, Earth blocks sunlight from reaching themoon.

May 28, 2015Total Lunar EclipseEarth's shadow has both the umbra and penumbraHOWEVER a total lunar eclipse can be seen anywhere onEarth that the moon is visible**Total lunar eclipse is more likely to be seen than a totalsolar eclipse**

May 28, 2015Partial Lunar Eclipse-this occurs for most lunar eclipses- Earth, the moon, and the sun are not quite in line- moon passes partly into the umbra of Earth's shadow-edge of the umbra is appears blurry - you can watch itpass over the moon for hours

May 28, 2015Reading Check: During which phase of the moon can lunareclipses occur?

May 28, 2015Tides- rise and fall of the ocean water- occurs approximately every 12.5 hours- water rises for 6 hours, falls for 6 hours-regular cycle

May 28, 2015Tides are caused by differences in how much the moon's gravitypulls on different parts of Earth

May 28, 2015The Tide Cycle

May 28, 2015Spring Tides- the gravity from the sun and the moon pulls the Earth'swater- during new moon and full moon (sun, moon, and Earth arealmost fully in line)- gravity of the sun and moon pull in the same direction andproduce a spring tide- creates a tide with the greatest difference betweenconsecutive low and high tides- occur twice a month

May 28, 2015Spring Tides

May 28, 2015Neap Tides- occurs when there is a first quarter or third quarter moon- line between Earth, sun, and moon creates a right angle(MATH IN SCIENCE - WOAH!)- gravity of sun and moon pull from different directions- the least amount of difference between a high and lowtide-occur twice a month

May 28, 2015Neap Tide

May 28, 2015Classwork Quiz:1.) What causes the moon the shine?2.) Why does the moon appear to change shape during thecourse of the month?3.) How is a solar eclipse different than a lunar eclipse?4.) What phase of the moon is this?

Phases of the Moon-Moon does not produce light, reflects light from the sun like a mirror-different shapes of the moon you see from Earth phases-phases are caused by the relative positions of the moon, Earth, and sun.-the phase of the moon you see depends on how much of the sunlit side of the moon faces Earth

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