By: Anne Marie Hart

EARTH IN SPACE AND TIME

OUR SOLAR SYSTEM!*Eight Planets

*4 Rocky Planets: Mercury, Venus, Earth, and Mars

*4 Gas Planets: Jupiter, Saturn, Uranus, and Neptune

*Moons, comets, asteroids, and dust

THE SUN

*About 5,000 Celsius!

*Sustains all life on Earth

*Closest star to the Earth

HOW BIG IS THE SUN?*Basketball=sun

*Pea=earth

EARTH: OUR HOME!*Fifth largest of the eight planets

*About 93 million miles from the sun

*About 70% water

*Has a 23.5% tilt

EARTH’S MOTIONS*Earth has three motions:

*Spins on an imaginary line

*Travels around the sun

*Moves through the milky way

EARTH’S ROTATION*Full rotation=24 days

*Earth rotates every 24 hours

*Earth orbits the sun every 365 days

THE SEASONS*The earth’s axis creates the seasons

*We live in the northern hemisphere:

*summer=facing the sun

*winter=facing away

SEASONS DIAGRAM

MOON

*Does not create it’s own light

*Reflects the light of the sun

*Significantly smaller than earth

*Has no life of any kind

NIGHT/DAY*During a rotation night/day

*Earth facing sun=day

*Earth facing away=night

MOON PHASES*The moon is always circling the earth

*As it moves, its appearance changes

*One month=One full cycle

*Lets take a look!!

MOON PHASES CONT…

DID YOU KNOW?

*Pluto is not a planet

*We have four dwarf planets!

*Ceres, Pluto, Eris, and Makemake

*Solar system = 4.6 billion years old!

LETS REVIEW!*The sun

*Earth

*Moon

*Night/Day

*The Seasons

CREDITS1. Wikipedia, Solar System Scale, September 4, 2010, Creative Commons Attribution

2. NASA Goddard Photo and Video, NASA's SOHO Sees Sun Popping Out All Over, September 23, 2010, Creative Commons Attribution

3. Anne Marie Hart, Basketball and Pea, September 28, 2010, paint

4. Woodleywonderworks, Blue Marble (Planet Earth), September 23, 2010, Creative Commons Attribution

5. Stungeye, Solstice, September 30, 2010, Attribution-Non-commercial-Share Alike

6. NASA Goddard Photo and Video, The Moon, September 23, 2010, Creative Commons Attribution

7. Mitopencourseware, Day and Night, September 4, 2010, Attribution-Non-commmercial-Share Alike

8. Wikipedia, Phases of the Moon, September 30, 2010, Creative Commons Attribution

Dunbar B, Sun, NASA, November 29, 2007, September 23, 2010 http://www.nasa.gov/worldbook/sun_worldbook.html

Dunbar B, Moon, NASA, November 29 ,2010, September 23, 2010 http://www.nasa.gov/worldbook/moon_worldbook.html

Dunbar B, Earth, NASA, November 29, 2010, September 23, 2010 http://www.nasa.gov/worldbook/earth_worldbook.html

Dunbar D, Solar System, NASA, November 29, 2010, September 23, 2010 http://www.nasa.gov/worldbook/solarsystem_worldbook_update.html

Cain F, Interesting Facts about the Solar System, Universe Today, July 24, 2008 September 5, 2010 http://www.universetoday.com/15959/interesting-facts-about-the-solar-system/