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
Sec. 5 Comets, Asteroids, & Sec. 5 Comets, Asteroids, & MeteorsMeteors
YouTube video-Bill Nye Comets & Meteors song
comet
“dirty snowball”
chunk of ice & dust
orbits- long narrow
ellipse
Parts of a comet
coma nucleus tail
outer layer inner layerformed by solar
wind pushing gasaway from the sun
tail
nucleus coma
Most comets- found in Kuiper belt (between Neptune & Pluto) or Oort cloud (beyond Pluto)
cometcomet
Pigpen from “Peanuts”
Interactive Comet Animation
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.
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.
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
the the asteroidasteroid IdaIda and its newly- and its newly-discovered moon, discovered moon, DactylDactyl
Asteroid beltAsteroid belt
asteroidsasteroids
meteoroidmeteoroid meteor meteor meteorite meteorite
meteor showermeteor shower
meteormeteor
meteoritemeteorite
A shooting star is really a meteor.A shooting star is really a meteor.
comacomaouter layer of a comet
““dirty snowball”dirty snowball”Nickname for a comet
nucleusnucleusInner layer of a comet
tailtailFormed by solar wind pushing gas away from the Sun
elliptical (ellipse)elliptical (ellipse)The shape of a comet’s orbit around the Sun
meteormeteorA shooting star is really a ________.
asteroidsasteroids
Too small & too numerous to be Too small & too numerous to be considered full fledged planetsconsidered full fledged planets
meteoritemeteoritechunk of rock that lands chunk of rock that lands
on Earth’s surfaceon Earth’s surface
meteoroidmeteoroidchunk of rock or dust chunk of rock or dust in spacein space
Comets or asteroidsComets or asteroidsMeteoroids usually come Meteoroids usually come
from________ or ___________.from________ or ___________.
frictionfriction
causes meteoroids to burn causes meteoroids to burn up in the atmosphereup in the atmosphere
Halley’s CometHalley’s CometThe comet that is The comet that is
observed from Earth every observed from Earth every 76 years76 years