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