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The Solar System

The Solar System. By Rena Liu. Objectives for 5 th Grade. TEKS 5.12 (D) identify gravity as the force that keeps planets in orbit around the Sun and the moon in orbit around the Earth. Diagram the placement of the Sun and the planets. Know the names of the planets.

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The Solar System

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  1. The Solar System By Rena Liu

  2. Objectives for 5th Grade • TEKS 5.12 (D) identify gravity as the force that keeps planets in orbit around the Sun and the moon in orbit around the Earth. • Diagram the placement of the Sun and the planets. • Know the names of the planets. • Describe the basic characteristics of the planets

  3. An overview of the Solar System

  4. Facts about the solar system • The solar system contains the nine planets and other smaller objects such as minor planets, comets, meteoroids and cosmic dust. • The first four inner planets (Mercury, Venus, Earth, and Mars) are relatively small and resemble the Earth in composition (rocky). • The next four planets (Jupiter, Saturn, Uranus, and Neptune) are much larger planets and are very gaseous in nature. Pluto is the smallest planet and is the farthest away from the Sun. • All the objects in our Solar System orbit the Sun. It is so big that everything in our Solar System could fit in it many times. • Gravity is the force that keeps planets in orbit around the Sun and the moon in orbit around the Earth.

  5. The Sun • The Sun is by far the largest object in the solar system. It contains more than 99.8% of the total mass of the Solar System. The Sun's outer visible layer is called the photosphere and has a temperature of 6,000°C (11,000°F).

  6. Mercury • Is about the same size as the Moon. Its mass (weight) is 1/20th that of the Earth. Its diameter is 2/5 that of our planet. • Is the closest planet to the Sun. It is about 58 million kilometers from the Sun. • Makes one complete orbit around the Sun every 87.97 days. • Is covered with mountains, craters, ridges and valleys.

  7. Venus • Is the closest planet to the Earth. It is about the same size as the Earth. • Is the second planet in order from the Sun. It is about 108 million kilometers from the Sun. • Makes one complete orbit around the Sun every 224.7 days. • Is the brightest object in our sky, besides the Sun and Moon.

  8. Earth • Is the planet that we live on, our planet. • Is the third planet in order from the Sun. It is about 150 million kilometers from the Sun. • Makes one complete orbit around the Sun every 365.27 days. • Is mostly covered by water (75%). • Has a total of 1 satellite (the Moon).

  9. Mars • Is sometimes called the Red Planet. Its mass (weight) is 1/10th that of the Earth. Its diameter is 1/2 that of our planet. • Is the fourth planet in order from the Sun. It is about 228 million kilometers from the Sun. • Makes one complete orbit around the Sun every 686.98 days. • Has seasons similar to our planet, but they last much longer. • Has a total of 2 satellites (or moons).

  10. Jupiter • Is the largest of all the planets. Its mass (weight) is over 320 times that of the Earth. Its diameter is over 10 times that of our planet. • Is the fifth planet in order from the Sun. It is about 780 million kilometers from the Sun. • Makes one complete orbit around the Sun every 11.86 years. • Is one of the brightest planets.

  11. Saturn • Is the second largest of all the planets. Its mass (weight) is over 95 times that of the Earth. Its diameter is over 10 times that of our planet. • Is the sixth planet in order from the Sun. It is about 1.4 billion kilometers from the Sun. • Makes one complete orbit around the Sun every 29.46 years. • Is known for the many rings that go around it. • Has a total of 21 satellites.

  12. Uranus • Is composed mainly of hydrogen and helium gases. Its mass (weight) is over 14 times that of the Earth. Its diameter is 4 times that of our planet. • Is the seventh planet in order from the Sun. It is about 2.9 billion kilometers from the Sun. • Makes one complete orbit around the Sun every 84 years. • Can sometimes be seen with the naked eye. • Has a total of 15 satellites (or moons).

  13. Neptune • Is very similar to Uranus in size. Its mass (weight) is over 17 times that of the Earth. Its diameter is 4 times that of our planet. • Is the eighth planet in order from the Sun. It is about 4.5 billion kilometers from the Sun. • Makes one complete orbit around the Sun every 164.79 years. • Has a weather system that is very active. Some storms with winds of 400 miles per hour have lasted for hundreds of years on its surface. • Has a total of 8 satellites (or moons).

  14. Pluto • Is the smallest planet. Its mass (weight) is 1/500th that of the Earth. Its diameter is about 1/6 that of our planet. • Is the ninth planet in order from the Sun. It is about 5.9 billion kilometers from the Sun. • Makes one complete orbit around the Sun every 248 years. • Is sometimes known as a double-planet because it has a moon (Charon) that orbits it.

  15. Sources • Astronomy for Kids http://www.frontiernet.net/~kidpower/solarsystem.html • Nasa http://www1.nasa.gov/home/

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