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  1. 1. The Solar System Third Grade Unit
  2. 2. Vocabulary Orbit means to circle around. The planets orbit the Sun. Our moon is a body in space that circles planet Earth. Other planets have moons, too. Our solar system includes the Sun and all the planets, moons, and stars. A star is a body which looks like a bright point in the sky at night. A star is not a planet or a moon. Our sun is a star. Scientists pretend that planets and stars have a line drawn through their middles. This line is called an axis.
  3. 3. BrainpopWatch the video clip titled: Planets of theSolar System
  4. 4. Order of the Planets MercuryMyVery Venus Click to edit Master text styles Second levelEducated Earth Third level Fourth levelMother Mars Fifth levelJust JupiterServed SaturnUs UranusNine NeptunePizzas Pluto
  5. 5. The Sun The center of our Click to edit Master text styles Second levelsolar system is the Sun. Third level It is our closest star. All Fourth level Fifth levelthe energy we havehere on Earth comesfrom the Sun. Theplanets in our solarsystem orbit, or revolvearound the Sun.
  6. 6. Click to edit Master text stylesSecond levelThird levelFourth level Sun FactsFifth level The outside of the Sun is 11,000 degrees Fahrenheit. A REALLY hot day on Earth is only 100 degrees Fahrenheit. The Suns surface is about 100 times as hot as the hottest day on Earth!!! The Sun is very, very big. More than one million planet Earths could fit inside of the Sun! The Sun is very important to us. It gives us light and heat. Without light and heat we would not be able to live. The Sun is composed of helium and hydrogen.
  7. 7. Sun Websites
  8. 8. Mercury Mercury is the planet which is closest to the Sun. It is one of the four inner planets. These planets are Mercury, Venus, Earth and Mars. The inner planets are also called the rocky planets, because they are made of rocks. 1 Earth year = about 4 Mercury years!! Mercury is about 1/3 as big as earth. 3 Mercurys = 1 Earth! Click to edit Master text styles Second level Third level Fourth level Fifth level
  9. 9. edit Master text stylesnd level Venusd levelFourth level  Fifth level • Venus is the second planet from the Sun. • Venus is sometimes called the "Evening Star" and the "Morning Star". It is very bright. You can see it at sunset and sunrise. • Venus spins very slowly. One "day" on Venus is longer than one year on Earth. • Venus is different from all the other planets because it spins "backwards" on its axis.
  10. 10. Click to edit Master text styles Second levelClick to edit Master text stylesSecond level Earth Third level Fourth levelThird level Fifth levelFourth levelFifth levelA photograph ofEarth from space The planet we live on is called Earth. It is alsocalled the blue, or water planet, because most ofthe surface of Earth is covered with water. Fromspace Earth looks like a blue marble. Earth isjust the right distance from the Sun to stay warm,and the water on Earth is constantly beingmoved by the Sun’s energy.
  11. 11. Earth FactsEarth is the third planet from the sun.It is the largest of the four innerplanets.Earth spins very quickly compared toother planets. It only takes Earth 24hours to spin around its axis one time.One Earth day is 24 hours long. Earth orbits the sun in 365 days. Thismakes one Earth year 365 days long.
  12. 12. Earth orbits aroundthe Sun.
  13. 13. The Moon Click to edit Master text stylesThe planet Earth has a Second levelsmall body circling it. The Third levelbody is called the Moon. Fourth level Fifth levelThe Moon cannot supportlife because it has noatmosphere. It is coveredwith craters from collisionswith meteors and asteroids.The Moon affects life onEarth. Our tides are causedby the pull of the Moon onEarth.
  14. 14. The Moon is Earth’s SatelliteA satellite is anythingthat orbits anotherobject. Earth is asatellite that orbits theSun. The Moon orbitsEarth and is oursatellite.
  15. 15. Moon Facts It has many volcanoes on it which do not erupt anymore. We can see the moon at night without using a telescope. It is the closest space object to our planet.
  16. 16. MarsMars is the fourth planet from the Sun. It is the lastof the four inner planets. Mars is often called the"Red Planet" because the dirt on the planet is ared color.Mars has an atmosphere, but it is different thanEarths. Our atmosphere is made up of oxygen(which we breathe), nitrogen, carbon dioxide andother gases. Earth has a lot of water vapor in theair. Mars has "air" made up mostly of carbondioxide. Other gases in the air of Mars are nitrogenand oxygen, but there is not enough oxygen for ahuman to breathe.
  17. 17. JupiterJupiter is the fifth planet from the Sun. It is thelargest planet in the solar system and it is thelargest of the outer planets. The outer planets are:Jupiter, Saturn, Uranus, Neptune and Pluto.Jupiter is mostly made of a gas called hydrogen.Its atmosphere has three layers of clouds in it. Thefirst layer of clouds is made of ammonia. Ammoniais the stinky stuff that is used to clean floors.
  18. 18. Jupiter Facts  An interesting fact about Jupiter is that it has rings.  Jupiter has a lot of storms in its atmosphere. The spot in this picture is a storm on Jupiter. Scientists call this Jupiters red spot. It is a storm which has been going on for about 300 years.  Jupiter has at least 16 moons.
  19. 19. SaturnSaturn is the second of the outer planets. It is alsothe second largest planet in our solar system.Saturn is made mostly of hydrogen and helium. OnEarth these are usually gases. In fact, helium isthe gas used to blow up balloons that float. OnSaturn, hydrogen and helium are liquids! Saturnhas weather and storms. Scientists think these aremostly wind storms.The rings are made up pieces of rocks and ice.These pieces can be as small as a pebble or asbig as a building. The rings get their pretty colorsbecause the sun shines on them from far away.
  20. 20. UranusUranus is the seventh planet from the Sun. It is the third ofthe outer planets. Like Saturn and Jupiter, Uranus has avery short day. One day on Uranus is only 17 hours long. Ayear on Uranus is VERY long. One Uranus year is 84 Earthyears! It takes Uranus 84 years to orbit the Sun one time!That means Uranus goes all the way around the SunONCE in our lifetime!Uranus has more moons than any other planet in our solarsystem. So far, 20 moons have been discovered.Uranus is made of methane ice. Methane is usually a gason Earth, but it is so cold on Uranus that it is frozen into ice.Uranuss atmosphere is mostly made of methane gas.There so many clouds made of methane in theatmosphere, that they cover the whole planet.
  21. 21. o edit Master text stylesond level Neptunehird level Fourth level  Fifth level Neptune is the eighth planet from the Sun and the fourth of the outer planets. Like Uranus, Neptune is a blue color because its atmosphere is mainly made of methane gas. Jupiter has the "Great Red Spot" that looks like an eye. Neptune has a "Great Dark Spot". Jupiters spot is really a storm. Scientists think that Neptunes spot is a hole in its atmosphere. Neptune has 8 moons. The biggest one is Triton.
  22. 22. Second level Third level Fourth level Pluto Fifth levelPluto is the 9th planet from our sun. It is very faraway! It takes Pluto about 248 years to orbit, orcircle, the Sun 1 time. Pluto spins like a top 1 timein about 6 Earth days. We have not learned muchabout Pluto, because it is so far away from us. Weknow that Pluto is smaller than Earth, and that thetemperature on Pluto may be -300 degrees! Thatis cold! Scientists are almost sure that there is nolife on Pluto.
  23. 23. Additional Material There are several other Brainpop movies on different planets. The new movie on Mars is good. StarChild: A Learning Center for Young Astronomers is another great to edit Master text stylesSecond level  Third level Click to edit Master te  Fourth level Second level  Fifth level Third level Fourth level Fifth level
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