Phases, Eclipses, and Tides Section 19.3
Dec 31, 2015
Moon Motions
• Revolves around Earth
once every 27.3 days
• Rotates around its axis
once every 27.3 days
• Because of the moons
movements, the same side
of the moon always faces Earth
http://www.moongiant.com/Blue_Moon_Calendar.php
Names of the Full Moons
January Wolf MoonFebruary Snow MoonMarch Sap MoonApril Pink MoonMay Flower MoonJune Strawberry MoonJuly Buck MoonAugust Sturgeon MoonSeptember Harvest MoonOctober Hunter MoonNovember Beaver MoonDecember Cold Moon
Blue Moon – second full moon of a single month. Occurs, on average, every 2.72 years
Eclipses
• When the moon’s shadow hits Earth or the Earth’s shadow hit the moon
Half the Earth can view eclipse at
the same time
Only the people in the umbra can viewthe eclipse
Partial Eclipse of the Moon
• http://www.moongiant.com/Lunar_Eclipse_Calendar.php
• http://www.timeanddate.com/eclipse/lunar-eclipse-november-2012.html
Solar Eclipse
• http://www.timeanddate.com/eclipse/total-solar-eclipse-november-2012.html
• http://eclipse.gsfc.nasa.gov/SEanimate/SEanimate2001/SE2012Nov13T.GIF
What causes tides?
• The moon’s gravity pulls on Earth’s surface closest to the moon causing water to create a bulge
• Water is stolen from the sides to create the bulge
• The side of Earth furthest from the moon has the least effect of moon’s gravity and has a bulge that is the “left behind” water
Different kinds of tides
• The sun’s gravity can add to the moon’s pull or even it out depending on the positions of the sun, moon and Earth
Different kinds of tides
• Spring Tides- highest high tides, lowest low tides- sun, moon, & Earth are in line
• Neap Tides- lowest high tides, highest low tides- sun, moon, & Earth are at right
angles