1. The Inner Planets

2. The terrestrial planets 1.Mercury 2. Venus 3. Earth 4.Mars

3. Similarities 1) Rocky planets with Iron cores

4. 2) Have impact craters from Meteors & Asteroids

5. Mercury 88 earth days = 1 mercury year No moons Explored by “Mariner 10 “ in the 70’s

6. Venus 225 earth days = 1 venus year Rotates backwards No moons Dense atmosphere Runaway “greenhouse effect” Explored by Magellan orbiter in the 90’s

7. Earth Only Planet known to have liquid water

8. Mars 687 earth days = 1 Mars year 2 moons Olympus Mons  largest volcano in solar system Explored by Viking 1 and 2 & the Rover Missions