ppt课件模板:动态太阳系科普教育课件模板.pptx

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1、太阳系教育模板太阳系教育模板2 0 1 8 . 0 9 . 2 3认识太阳系认识太阳系我们将要学习:Solar System StarsGalaxyPlanetsAsteroidsCometsMeteorsSatellites太阳系的组成Nine Planets61 Known MoonsCometsAsteroids Meteoroids Interplanetary Gas and Dust4.6 BillionLarge theories suggest that the solar system began years ago as a spinning cloud of gas &

2、dust that condensedThe sun, a main source of light, is aboutFive Billionyears old. The suns surface, the photosphere has temperature of about 5,500 C. It is composedalmost entirely of Helium & Hydrogen.HHeHeHHHeThe sun mainly has four layers:The CoreThe PhotosphereThe Corona The Chromosphere.Solar e

3、clipseDuring the solar eclipse, moon moves in between the sun and the earth. The light from the outer part of the suns atmosphere, called the corona becomes visible during the total solar eclipse. In other words, the sun is hidden by the moon . starsStars are large celestial composed of gravitationa

4、lly contained hot gases emitting electromagnetic especially light as a result of nuclear reactions inside the star. SupernovaSome Stars are:Black HoleRed GiantgalaxyGalaxy are collection of stars, low density gases bound together by their own gravity. Galaxies are the building blocks of the universe

5、. The Andromeda GalaxyThe Milky Way Galaxy, in which the solar system is situated.You are hereThe SunplanetsA planet is a large round object in space that orbits around a star. There are nine planets in solar system. They are:mercuryMercury is the closest planet to the sun. It is a small, rocky plan

6、et. Its surface has been heavily cratered by meteorites. It completes one revolution around the sun in 88 days.venusVenus is called the morning and the evening star as it is the brightest object in the sky. Venus is the hottest planet of solar system.EarthThe fifth largest planet in the solar system

7、 is earth. Earth is the only planet which support to life. It is the third nearest planet to the sun.MarsMars is the known red planet because of red iron oxide dust that cover its surface. Mars includes the volcano Olympus Mons i.e. the biggest volcano in the solar system.jupiterJupiter is the large

8、st planet in the solar system. It occupies the fifth position in solar system.SaturnSaturn is the sixth planet from the sun and second largest planet in the solar system. Saturn has a beautiful ring system.uranusUranus is the third largest planet of the solar system. It has 15 moons , 10 rings. It h

9、as a blue- green color due to methane.neptuneNeptune is known as the blue planet. It is the fourth largest planet. This planet shows a blue color because of the presence of methane in the atmosphere.plutoPluto is not a planet, its a dwarf planet that is located in the outermost of the solar system.

10、Thats why is the farthest planet from Sun.asteroidsAsteroids are one of the many small or minor planets that move in the elliptical orbits primarily between the orbits of Mars and Jupiter. They also orbits the sun, most of them travel in a between mars and Jupiter. Jupiters gravitational pull send a

11、steroids into erratic orbits, causing them to collide with other planets and other etsA mass of ice and dust with a long tail, moving around the solar system. Comets look like shooting stars. Here is one example of comet, Halleys comet . This comet reappears every 76 years. The comets orbit which it

12、 passes is closest to the sun.meteorsMeteors are small bodies of matter from outer space that glows like a shooting star. A piece of rock or metal that has fallen to the earth from space is known as a Meteorite. A small body that would become a meteor if it entered the earths surface us known as a M

13、eteoroid.MoonMoon, the natural satellite of the earth. The moon has no free water and no atmosphere, so there is no weather to change in surface. Moon PhaseNew MoonWaxing CrescentFirst QuarterWaxing GibbonsFull MoonWaning Gibbous Last Quarter Waning Crescent New MoonLunar Eclipse Lunar eclipse occur

14、s when earth passes between the sun and the fool moon, so that the earths shadow is cast on the moon.SatellitesSatellites monitor the earth and its atmosphere in many ways. Satellites are use in weather forecasting and in many solar panels provide electricity to power the satellites. The first satellite to go in space was Sputnik-I谢谢观看

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