Phases, Eclipses, and Tides

1. Phases, Eclipses, and Tides Section 19.3

2. 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

3. Moon Phases 29.5 day cycle

4. Teachers' Domain: Phases of the Moon

5. http://www.moongiant.com/Blue_Moon_Calendar.php Names of the Full Moons January Wolf Moon February Snow Moon March Sap Moon April Pink Moon May Flower Moon June Strawberry Moon July Buck Moon August Sturgeon Moon September Harvest Moon October Hunter Moon November Beaver Moon December Cold Moon Blue Moon – second full moon of a single month. Occurs, on average, every 2.72 years

6. 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 view the eclipse

7. Partial Eclipse of the Moon • http://www.moongiant.com/Lunar_Eclipse_Calendar.php • http://www.timeanddate.com/eclipse/lunar-eclipse-november-2012.html

8. Solar Eclipse • http://www.timeanddate.com/eclipse/total-solar-eclipse-november-2012.html • http://eclipse.gsfc.nasa.gov/SEanimate/SEanimate2001/SE2012Nov13T.GIF

9. What causes tides? • Tides are caused by gravity between the Earth, moon, and sun

10. 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

11. 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

12. 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

13. Tides