8th Grade Ch. 3 Sec. 5 Comets, Asteroids and Meteors
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Transcript of 8th Grade Ch. 3 Sec. 5 Comets, Asteroids and Meteors
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Sec. 5 Comets, Asteroids, & Sec. 5 Comets, Asteroids, & MeteorsMeteors
YouTube video-Bill Nye Comets & Meteors song
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comet
“dirty snowball”
chunk of ice & dust
orbits- long narrow
ellipse
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Parts of a comet
coma nucleus tail
outer layer inner layerformed by solar
wind pushing gasaway from the sun
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tail
nucleus coma
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Most comets- found in Kuiper belt (between Neptune & Pluto) or Oort cloud (beyond Pluto)
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cometcomet
Pigpen from “Peanuts”
Interactive Comet Animation
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Comet Hale-Bopp in 1997
The passage of Hale-Bopp was notable for inciting a degree of panic about comets not seen for decades. Rumors that the comet was being followed by an alien spacecraft inspired a mass suicide among followers of the Heaven's Gate cult.
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Comet Halley was visible in 1910 Comet Halley was visible in 1910 and again in 1986. The next time and again in 1986. The next time it will be visible will be in early it will be visible will be in early 2062.2062.
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AsteroidsAsteroids
Too small & too Too small & too numerous to be numerous to be considered full fledged considered full fledged planetsplanets
Most revolve around Sun Most revolve around Sun between orbits of Mars & between orbits of Mars & Jupiter= asteroid beltJupiter= asteroid belt
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the the asteroidasteroid IdaIda and its newly- and its newly-discovered moon, discovered moon, DactylDactyl
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Asteroid beltAsteroid belt
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asteroidsasteroids
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meteoroidmeteoroid meteor meteor meteorite meteorite
meteor showermeteor shower
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meteormeteor
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meteoritemeteorite
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A shooting star is really a meteor.A shooting star is really a meteor.
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comacomaouter layer of a comet
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““dirty snowball”dirty snowball”Nickname for a comet
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nucleusnucleusInner layer of a comet
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tailtailFormed by solar wind pushing gas away from the Sun
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elliptical (ellipse)elliptical (ellipse)The shape of a comet’s orbit around the Sun
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meteormeteorA shooting star is really a ________.
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asteroidsasteroids
Too small & too numerous to be Too small & too numerous to be considered full fledged planetsconsidered full fledged planets
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meteoritemeteoritechunk of rock that lands chunk of rock that lands
on Earth’s surfaceon Earth’s surface
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meteoroidmeteoroidchunk of rock or dust chunk of rock or dust in spacein space
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Comets or asteroidsComets or asteroidsMeteoroids usually come Meteoroids usually come
from________ or ___________.from________ or ___________.
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frictionfriction
causes meteoroids to burn causes meteoroids to burn up in the atmosphereup in the atmosphere
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Halley’s CometHalley’s CometThe comet that is The comet that is
observed from Earth every observed from Earth every 76 years76 years