1. SNC 1D

2. The Inner Planets  Terrestrial  Rocky iron core  High temperatures  Closer to the Sun  Closer to each other  Smaller than the outer planets  Slow rotation and fast revolution  Few moons and no rings

3. Mercury  Closest to the Sun  Rotation: 59days  Revolution: 88days  Very Thin Atmosphere: Helium, oxygen, hydrogen  Many craters  Temperature extremes  400°C during day, -180°C at night

4. Mercury

5. Venus  Earth’s sister planet  Rotation: 243 days  Revolution: 225 days  Thick Atmosphere: mostly carbon dioxide, nitrogen and sulfuric acid  Longer day than year  Spins opposite than other planets  Over 500°C all the time  Cratered and volcanic surface

6. Venus

7. Earth  Home sweet home  Only planet with sustained life  Hydrosphere (water)  Atmosphere made up of N 2, O 2, CO2  Rotation: 24 hours  Revolution: 365 days  1 moon

8. Earth’s Moon  The moon makes a complete orbit around Earth in 27 Earth days and rotates or spins at that same rate, or in that same amount of time. This causes the moon to keep the same side or face towards Earth during the course of its orbit.  rocky, solid-surface  very thin atmosphere

9. Mars  Frozen polar CO2 caps  Smaller than Earth  Rotation: Slightly longer than 24 hours  Revolution: 687 days  Very cold  Largest mountain in solar system  Olympus Mons  Thin atmosphere of CO 2, N 2 and Ar  2 moons:Phobos and Deimos  known as the Red Planet due to rust in soil

10. Moons of Mars  Phobos  orbits Mars three times a day very close to surface  Deimos  smaller of Mars' two moons  whirls around Mars every 30 hours.

11. Mars