3. Size • Smaller than Earth • 8 Mars would fit inside the Earth!

4. Days and Years • One Earth day is 23 hrs and 56 min • One Earth year is 365 days

5. Days and Years • One martian day is 24 hours and 37 minutes • One martian year is 686 earth days, almost two Earth years

6. Seasons • Like Earth, Mars tilts • This tilt causes seasons

7. 3500 km (2200 miles)

8. Deimos – 39 km (24 miles) Phobos – 69 km (43 miles)

9. Mars is the fourth planet from the Sun

10. Mars is Farther Away • Earth is 93 million miles from the Sun • Mars is 140 million miles from the Sun

11. Mars is Cold • High = 40F • Low = -195F

12. Earth is Warm • High = 136° F • Low = -128° F

13. Atmosphere • Very thin atmosphere • Mainly carbon dioxide • No oxygen

14. Atmosphere • Thick • Mainly nitrogen and oxygen • Small amounts of carbon dioxide

15. Mars is Dry • No lakes, rivers, or oceans

16. Earth has oceans, lakes and rivers. Earth is Wet