1. Mercury
Closest to the sun
Covered in craters
No atmosphere
No moons
Smallest planet
Rocky planet

2. VENUS Same size as Earth Has thick clouds
Hot temperatures due to Greenhouse Effect.
Lots of Acid Rain
Nicknames: earths twin, Goddess of Love, Witch Star, Evening and morning star.
No moons
Rocky planet

3. Earth
Has liquid water
Contains life
Rotation on its axis is 24 hours.
Revolution around the sun is days

4. EARTH The earth is 243,000 miles from the moon.
The earth is 93 million miles from the sun.
Has 1 moon
Rocky Planet

5. Moon
A natural satellite orbits a planet.
Opaque: does NOT produce light but reflects light.
Takes about a month to orbit earth.
Has 8 phases

6. Mars
Known as the Red Planet
Largest volcano in solar system (called: Mount Olympus Mons)
Has LOTS of volcanoes
(Has two moons: Phobos, Deimos)
Rocky planet

7. Jupiter
Largest planet
Huge storms
GREAT RED SPOT is a 300 year old storm
63 moons
Gas planet

8. Saturn
Ringed planet-rings made of rock and ice
Has 52 moons
Lightest planet
Gas planet

9. Uranus
Rotates on its side
Has rings
27 moons
Green ball
Gas planet

10. Neptune
Blue color
High winds, storms
13 moons
Has rings
The GREAT DARK SPOT- giant storm
Gas planet

11. PLUTO
Was a planet
Considered a rocky Dwarf Planet
Changes revolution places with Neptune.
Has 3 moons

12. Terms

13. planets, moons, and other objects that orbit a star.
Planetary system is:
planets, moons, and other objects that orbit a star.

14. Planet
A rocky or gaseous object that orbits a star.

15. INNER PLANETS Also called TERRESTRIAL PLANETS
Mostly solid rocky bodies (Mercury, Venus, Earth, Mars)

16. ASTEROID BELT
LOCATED between Inner and Outer Planets (between Mars and Jupiter)
Made of rocks smaller than planets

17. OUTER PLANETS LOCATED OUTSIDE THE ASTEROID BELT
CALLED GAS GIANTS (Jupiter, Saturn, Uranus, Neptune)

18. Our Sun, the Star
A medium size…gaseous body
made up of hydrogen & helium
emits energy
Luminous: produces it’s own light.

19. Meteoroid: Rocks orbiting in space
Meteor: a rock that enters the earth’s atmosphere
Meteorite: when a rock strikes the earths surface.

20. ASTEROIDS: A small rocky object, orbits a planet usually found in the Asteroid Belt.
COMETS: made up of ice and dust particles, has a tail, and circles a star
in an elliptical orbit.

21. SCIENTISTS GALILEO: Created the Telescope Saw the moons of Venus
Saw Sunspots
Father of Astronomy

22. SCIENTISTS COPERNICUS:
Discovered the earth revolved around the sun calling it heliocentric.