Comets Asteroids & Meteors
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Transcript of Comets Asteroids & Meteors
Comets Asteroids &
MeteorsAstronomy Chapter 2.5
Pages 80-83
• “Dirty snowballs”
• Chunks of ice and rock
• Very long and narrow elliptical orbits
Comet
1. Coma: gas and dust from the inner layer
2. Nucleus: central part of a comet
3. Tail: gas and dust trail of comet.
Parts of a Comet
• Sun melts the ice and dust into gas and forms the coma.
• Solar wind pushes the gas and dust away from the sun forming the tail
Halley’s comet every76 Years (2062)
Comet
• Terrestrial objects too small and numerous to be planets.– Over 10,000
• Ceres is a dwarf planet
• An asteroid might have made the dinosaurs extinct.
Asteroids
• Asteroid Belt between Mars and Jupiter.Asteroids
• A chunk of rock drifting in space
• Usually from a comet or asteroid.
Meteoroid
• Meteoroid enters Earth’s atmosphere and burns up due to friction leaving a streak of light.
• Shooting Star
Meteor
• Meteor that is too big to burn up
• Hits Earth’s surface• Usually made of iron
and nickel.
Meteorite
What to Work On• Read textbook pages 80-83• Answer Section Review questions 1-4 on
page 83.
DUE: Friday, April 13th