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Let’s Talk about the Solar System! By, Deanna Kulesz Greetings from Planet Earth! Hello 3rd Graders, I’m Ms. Kulesz I plan on teaching all of you about our Solar System So, put on your space helmets and let’s start with the Sun! The Sun The star we call “The Sun” is HUGE! It is more than a hundred times wider than Earth (the Sun has a diameter of 870,000 miles) Because the Sun is so big, it attracts many objects with its gravity Some objects are large, such as planets, while some are small, such as moons and comets IMAGE SOURCE: http://www.windows.ucar.edu/tour/link =/sun/sun.html The Solar System These objects that are attracted and orbit the Sun are part of the Sun’s family This is our Solar System! IMAGE SOURCE: http://www.windows.ucar.edu/tour/link =/our_solar_system/solar_system_1.ht ml The Planets Planets are part of our Solar System Did you know that according to recent research, there are only 8 planets? Before the year 2006 it was believed that there were 9 planets! Do you know which planet is now called a “dwarf planet”? Here’s a hint, it’s the name of a Disney dog… The Planets Pluto is now called a “Dwarf-Planet!” Other dwarf planets in our Solar System are called Ceres and Eris The planets in our Solar System in order from closest to farthest from the Sun are: MERCURY VENUS MARS JUPITER EARTH SATURN Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune IMAGE SOURCE: http://www.windows.ucar.edu/tour/link=/our_sol ar_system/planets.html URANUS NEPTUNE Eclipses Today, I will briefly teach you about eclipses! What in the world is an eclipse? Many third graders have this question Eclipses occur when the Earth, Moon, and Sun are in a line Eclipses have to do with shadows Solar Eclipse A solar eclipse occurs when the moon blocks the light from the Sun This causes a shadow to be casted on a small area of the Earth If the alignment is not exact, a partial eclipse occurs Only part of the Sun’s light is blocked IMAGE SOURCE: http://www.astro.umd.edu/educationalreso urces/astro/moon/eclipses.html Lunar Eclipse A lunar eclipse occurs when the Moon passes through the Earth’s shadow Since the Earth is much larger than the Moon, a lunar eclipse can be seen by more people than a solar eclipse IMAGE SOURCE: http://www.astro.umd.edu/educationalreso urces/astro/moon/eclipses.html (On the Video) Now, let’s see a demonstration…. Conclusion Well, my studentastronauts, that ends today’s preview of our unit on the Solar System I hope you are ready for an “out of this world” experience! References Eclipses. (n.d.). Retrieved February 29, 2008, from http://www.astro.umd.edu/educationalresources/astro/mo on/eclipses.html Kerrod, R. (2003). Universe. New York, DK Publishing. Robson, D. (1991). Let’s look up the planets. New York, Aladdin Books. Russel, R. (2007). Our solar system. Retrieved February 22, 2008, from http://www.windows.ucar.edu/tour/link=/our_solar_syste m/solar_system.html