Evan's 'Solar System Webquest: The Planets' Science PPT

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This is my 'Solar System Webquest: The Planets' Science PPT. Please enjoy and for the real deal (with COOL animations) download it and watch it (if you have Microsoft Powerpoint).

This is my 'Solar System Webquest: The Planets' Science PPT. Please enjoy and for the real deal (with COOL animations) download it and watch it (if you have Microsoft Powerpoint).

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  • 1. Science PPT by Evan Ma (8C) This is the PPT I have made for the answers to our Science homework on “ Solar System Webquest: The Planets” ----- Thanks to Evan, Star Child , and the textbook for Information sources! Evan Ma 9/11/2011 8C
  • 2. General Info:
    • Define revolve : To revolve is to go around another object.
    • Define rotate : To rotate is to spin around one’s axis.
    • How many planets have been found in our solar system? 8
    • Which planets are the inner planets? Mercury, Venus, Earth, and Mars.
    • Which planets are the outer planets? Jupiter, Saturn, Uranus, and Neptune.
    • What is the difference between the inner and outer planets? The Inner Planets are closer to the sun than the Outer Planets, also the Inner Planets are solid spheres of rock, while the Outer Planets are large gaseous spheres with rings.
    • Why are more craters found on the inner planets compared to the outer planets? Because the Inner Planets were constantly bombarded by asteroids and meteorites during their first 600 million years in existence.
    • Define orbit : Orbit is the time/journey of a planet/object’s revolution around another planet/object.
    • What are three requirements to be considered a planet? A Planet must orbit around the sun, have enough mass so that it becomes round due to it’s own gravity, and also have cleared out it’s orbital path around the sun.
    • What is a dwarf planet? Dwarf planets were declared to be the class of objects which met the first 2 requirements, but failed the third.
    • List the three dwarf planets. Pluto, Ceres, and Eris.
  • 3. The Inner Planets:
    • Mercury
    • Venus
    • Earth
    • Mars
  • 4. Mercury
    • What causes Mercury’s atmosphere? The heat of the Sun.
    • What two elements can be found in the atmosphere? Helium, and Sodium.
    • What three processes shaped Mercury? Impact cratering where large objects struck the surface resulting in crater formation, volcanism where lava flooded the surface, and tectonic activity where the planet's crust moved in order to adjust to the planetary cooling and contracting.
  • 5. Venus
    • Why is Venus referred to as the “Evening Star”? Because it is the brightest planet that can be viewed from Earth at night.
    • What two elements can be found in the atmosphere? Carbon dioxide and sulfuric acid.
    • What is retrograde rotation? A retrograde rotation is a rotation opposite of the other 7 planets, or otherwise a clockwise rotation.
    • Why is a day on Venus longer than a year on Venus? Because Venus’ rotation is slower than it’s revolution.
    • If you were standing on Venus, why would the Sun appear to rise in the west and set in the east? Because Venus has a retrograde rotation.
    • Why is Venus the hottest planet in our solar system? Because of the tremendous greenhouse effect caused by the gases in its atmosphere.
  • 6. Earth
    • What elements make up our atmosphere? Water vapor, oxygen, nitrogen, argon, carbon dioxide, neon, methane, krypton, helium, xenon, hydrogen, nitrous oxide, carbon monoxide, nitrogen dioxide, sulfur dioxide, and ozone.
    • What two things does our atmosphere protect us from? Solar Radiation and Meteors.
    • What is the rotational tilt of the Earth? 23.5 degrees.
    • What produces the magnetic field on earth? The rapid spin of the Earth along with the molten metallic core.
    • What is the satellite of the Earth? The moon.
  • 7. Mars
    • What evidence do scientists have to life on Mars? Tiny ancient bacteria on meteorites from Mars.
    • What is the primary element of the atmosphere? Carbon Dioxide
    • Why does the planet appear to be red? Because of it’s iron-rich soil.
    • What is Olympus Mons? Olympus Mons is a giant volcano on Mars.
    • What are the two satellites of Mars? Phobos, and Deimos.
  • 8. The Outer Planets:
    • Jupiter
    • Saturn
    • Uranus
    • Neptune
  • 9. Jupiter
    • How is the shape of Jupiter affected by the planets rotation? Jupiter’s rapid rotation causes the planet to flatten at the poles and bulge at the equator.
    • What elements make up Jupiter’s atmosphere? Hydrogen, helium, sulfur, and nitrogen.
    • What is the Giant Red Spot? A hurricane-like storm that has been seen in Jupiter's southern hemisphere since Jupiter was first discovered.
    • How many known natural satellites does Jupiter have? 50+
    • What is interesting about Jupiter’s satellite Io? It is volcanically active, and has higher surface temperature than any other planetary body in our Solar System.
  • 10. Saturn
    • What elements make up Saturn’s atmosphere? Hydrogen, and helium.
    • What may have caused Saturn to have rings? Astronomers believe the rings developed from particles that resulted from the break-up of naturally occurring satellites. 
    • What is the composition of the rings? Water ice, and dust. (ice and dust particles)
    • Why could Saturn float in water? Because it’s density is so low.
    • How long do the seasons last on Saturn? Each season on Saturn lasts more than seven Earth years.
  • 11. Uranus
    • What is different about Uranus’s rotation? When viewed from Earth, it appears to rotate on its side! Because it is tilted 98 ° degrees.
    • What elements make up Uranus’s atmosphere? Hydrogen, helium, and methane.
    • How many known satellites does Uranus have? 27
  • 12. Neptune
    • What elements make up Neptune’s atmosphere? Ammonia, helium, and methane.
    • How many known satellites does Uranus have? 13
    • What is Triton? Explain how astronomers believe Triton became a satellite. Triton is a satellite that revolves around Neptune. Astronomers theorize that Triton was captured by Neptune's gravitational pull, forcing it into an orbit around the planet.
  • 13. Dwarf Planets
    • Pluto
    • Ceres
    • Eris
  • 14. Pluto
    • What are the names of Pluto’s three moons? Charon, Nix, and Hydra.
    • What have scientists learned about Pluto by using a spectroscope? They have detected methane frost on Pluto.
    • What is so unusual about Pluto’s moon Charon? Pluto’s atmosphere appears to extend out to include Charon, which suggests that they share an atmosphere.
  • 15. Ceres
    • How long is one revolution? 4.6 Earth years
    • Why was Ceres once considered an asteroid? Because Sir William Herschel labeled Ceres and other similar objects as asteroids in 1802.
    • What can be found on Ceres’ surface? Most probably a mixture of water ice, carbonates, and clays.
  • 16. Eris
    • What was Eris’ original name? Xena
    • How long does it take Eris to orbit the sun? 557 Earth years
    • What is the name of Eris’ moon? Dysnomia
    • Why is Eris not considered to be a planet? Because it does not clear out it’s orbit.
  • 17. The End!!!
    • This is the end of the PPT.
    • ----------------------------------------------------------------
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  • 18. Detailed Sources:
    • Starchild @ shorturls.tumblr.com/f5ol
    • The textbook
    • My brain
  • 19. Thank You for reading this!
    • PPT by Evan Ma, All Rights Reserved