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A gas planet that's off in the distance,Only recently they found my rings in existence.
I'm blue and cold and far away,People say I'm funny because I spin sideways.
Which planet am I?
WARM-UP # 2 – Why is pluto no loner a planet?
1 Comets–A comet is a “dirty snowball” about the size of an earth mountain. (dirt and ice)
Page 14 in your notebook
2 Structure of a Comet• Nucleus– 10 km “Dirty Snowball”
• Coma– Cloud of evaporated ices and ions– may be 100,000 km in diameter
• Tail– Always points away from Sun• Solar Wind and Radiation Pressure
3 Comet Diagram
To Sun
Ion Tail
Dust Tail
Coma
4 Comets
–Comets’ orbits are usually very long, narrow ellipses. – They produce tails of gas and dust when they approach the sun.
5 Halley’s Comet…. Orbits every 76 years
Halley’s Comet Orbit…next seen in 2062
6 Asteroids
• Asteroids are small, rocky worlds. • Most asteroids revolve around
the sun between the orbits of Mars and Jupiter. (asteroid belt) • WRITE in also known as planetoid
7 Meteoroid
• A meteoroid is a chunk of rock, metal, or dust in space.
8 A Meteor: “A shooting star”Shooting stars are not actually stars. These flashes of light across the sky are small bits of rock burning up in the Earth’s Atmosphere.
9 Meteorite
Meteoroids that survive as they pass through the
atmosphere and hit Earth’s surface are called
meteorites.
Barringer Meteor Crater, Arizona
A meteorite can make a hole, or crater, in the ground when it hits it. The larger the meteorite, the bigger the hole.
METEOROID: A piece of stone or metal that travels in outer space.
METEOR: An object from space that becomes glowing hot when it passes into Earth's atmosphere.
METEORITE: A piece of stone or metal from space that falls to Earth's surface.
SUMMARY
COMPLETE IN PENCIL!
Which include
Located between
Is made of
SOLAR SYSTEM
PLANETSOTHER
OBJECTS
INNER ASTEROID BELT