1. WARM-UP # 2 – Why is pluto no loner a planet?
Outer Planets
Outer planets
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?

2. 1 Comets Page 14 in your notebook A comet is a
“dirty snowball” about the size of an earth mountain. (dirt and ice)

3. 2 Structure of a Comet Nucleus Coma Tail 10 km “Dirty Snowball”
Cloud of evaporated ices and ions
may be 100,000 km in diameter
Tail
Always points away from Sun
Solar Wind and Radiation Pressure

4. 3 Comet Diagram
Ion Tail
Dust Tail
Coma
To Sun

5. 4 Comets Comets’ orbits are usually very long, narrow ellipses.
They produce tails of gas and dust when they approach the sun.

6. 5 Halley’s Comet…. Orbits every 76 years

7. Halley’s Comet Orbit… next seen in 2062

8. 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

9. 7 Meteoroid
A meteoroid is a chunk of rock, metal, or dust in space.

10. 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.

11. 9 Meteorite
Meteoroids that survive as they pass through the atmosphere and hit Earth’s surface are called meteorites.

12. 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.

13. METEOROID: A piece of stone or metal that travels in outer space.
SUMMARY
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.

14. COMPLETE IN PENCIL! SOLAR SYSTEM OTHER PLANETS OBJECTS INNER
Which include
Located between
Is made of
SOLAR
SYSTEM
PLANETS
OTHER
OBJECTS
INNER
ASTEROID BELT