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Discovering Comets, Asteroids & Meteoroids: A Journey Through the Universe

Embark on a cosmic exploration of comets, asteroids, and meteoroids to uncover the mysteries of our universe. Learn about their origin, composition, orbits, and potential impact on Earth. Dive into the Big Bang Theory, solar system dynamics, and the fascinating world beyond Earth. Prepare for a thrilling journey into space science!

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Discovering Comets, Asteroids & Meteoroids: A Journey Through the Universe

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  1. Welcome to Science 12/13/10 • Open your books to page 557-561 and use these pages to begin completing the outline you just received. • Today’s Schedule • 1. Schedule for the week • 2. Science Folder/Notes Organized • 3. Question of the Day • 4. Discussion on Comets, Asteroids, & Meteors

  2. Science Folder/Notes • These items should be in your Science Folder and should be studied for Friday’s Test 5 Key Concepts Paper • Big Bang Theory/Solar System Flow Chart • Sun Packet • Planet Packet • Comets, Asteroids, & Meteoroids Packet • Life Beyond Earth Packet • Word Wall List

  3. Question of the Day • What is most likely the object that hit Earth in the picture below? A comet, asteroid, meteoroid, meteor, or meteorite? • Most likely it was an asteroid • Why study comets, asteroids, & meteoroids. • Because they threaten the existence of life on Earth • Ultra Science: Hitting Earth :

  4. Comets • What is a comet? • Small body of ice, dust, and small rocky particles packed together that orbit the sun. “dirty snowballs” • Where do they come from? • Cold outer solar system. • Oort Cloud & Kuiper Belt

  5. Why are comets important? • Comets are made of the “leftovers” from the process of planet formation. • Each comet is a sample of the early solar system.

  6. A Comet’s Tail When a comet passes close to the sun, the heat from the sun evaporates the water in the comet creating a tail of gas and dust.

  7. Comet Orbits • Like the planets, comets also orbit the sun in an ellipse. • A comet’s tail will point away from the sun as it gets closer to the sun. • Interactive Comet Animation

  8. Asteroids • Large rocky objects that orbit the sun between Mars & Jupiter (asteroid belt) • Like comets, asteroids are the leftovers from the formation of the solar system.

  9. Meteoroids • Meteoroid- small chunk of rock or dust. Could be a piece of a comet or asteroid • Meteor- meteoroid that enters Earth’s atmosphere & creates a streak (shooting star) • Meteorite- meteor that hits Earth’s surface

  10. Impact of Asteroids & Meteoroids • The main theory on the extinction of the dinosaurs is that it was caused by an asteroid strike. • Could an asteroid hit again? • Yes • Will it happen again? • Yes • When will it happen? • 2014 & 2021 Possibly • Ultra Science: Hitting Earth : Bad Universe: Asteroid Impact Simulation Watch The Asteroid Threat:

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