mars basics. size & distance smaller than earth (0.532x) mars diam ~ 6779 km (4212 miles) ...
TRANSCRIPT
![Page 1: Mars Basics. Size & Distance Smaller than Earth (0.532x) Mars diam ~ 6779 km (4212 miles) Earth diam ~ 12,742 km (7918 miles) 8 Mars would fit](https://reader030.vdocuments.site/reader030/viewer/2022032705/56649dc05503460f94ab4701/html5/thumbnails/1.jpg)
Mars Basics
![Page 2: Mars Basics. Size & Distance Smaller than Earth (0.532x) Mars diam ~ 6779 km (4212 miles) Earth diam ~ 12,742 km (7918 miles) 8 Mars would fit](https://reader030.vdocuments.site/reader030/viewer/2022032705/56649dc05503460f94ab4701/html5/thumbnails/2.jpg)
Size & Distance
Smaller than Earth (0.532x)Mars diam ~ 6779 km (4212
miles)Earth diam ~ 12,742 km
(7918 miles)8 Mars would fit inside the
Earth!
![Page 3: Mars Basics. Size & Distance Smaller than Earth (0.532x) Mars diam ~ 6779 km (4212 miles) Earth diam ~ 12,742 km (7918 miles) 8 Mars would fit](https://reader030.vdocuments.site/reader030/viewer/2022032705/56649dc05503460f94ab4701/html5/thumbnails/3.jpg)
Size & Distance
![Page 4: Mars Basics. Size & Distance Smaller than Earth (0.532x) Mars diam ~ 6779 km (4212 miles) Earth diam ~ 12,742 km (7918 miles) 8 Mars would fit](https://reader030.vdocuments.site/reader030/viewer/2022032705/56649dc05503460f94ab4701/html5/thumbnails/4.jpg)
Size & Distance Smaller than Earth (0.532x)
Mars diam ~ 6779 km (4212 miles) Earth diam ~ 12,742 km (7918
miles) 8 Mars would fit inside the Earth!
1.5 AU from the sun (~140 million miles)
0.5 AU from the Earth (~43 million miles)
SCALE!!!
![Page 5: Mars Basics. Size & Distance Smaller than Earth (0.532x) Mars diam ~ 6779 km (4212 miles) Earth diam ~ 12,742 km (7918 miles) 8 Mars would fit](https://reader030.vdocuments.site/reader030/viewer/2022032705/56649dc05503460f94ab4701/html5/thumbnails/5.jpg)
Scale
Using a 12-inch Earth globe and 6-inch Mars globe as a scale:
Q: How far away do you think Mars would be?
A: 1.4 km (~0.87 miles)
![Page 6: Mars Basics. Size & Distance Smaller than Earth (0.532x) Mars diam ~ 6779 km (4212 miles) Earth diam ~ 12,742 km (7918 miles) 8 Mars would fit](https://reader030.vdocuments.site/reader030/viewer/2022032705/56649dc05503460f94ab4701/html5/thumbnails/6.jpg)
LPI
McDonald’s
![Page 7: Mars Basics. Size & Distance Smaller than Earth (0.532x) Mars diam ~ 6779 km (4212 miles) Earth diam ~ 12,742 km (7918 miles) 8 Mars would fit](https://reader030.vdocuments.site/reader030/viewer/2022032705/56649dc05503460f94ab4701/html5/thumbnails/7.jpg)
Rotation & Revolution
One Martian day (sol) is 24 hours and 37 minutes
One Martian year is 687 Earth days, almost two Earth years
![Page 8: Mars Basics. Size & Distance Smaller than Earth (0.532x) Mars diam ~ 6779 km (4212 miles) Earth diam ~ 12,742 km (7918 miles) 8 Mars would fit](https://reader030.vdocuments.site/reader030/viewer/2022032705/56649dc05503460f94ab4701/html5/thumbnails/8.jpg)
Seasons
Like Earth, Mars tiltsThis tilt contributes to seasons, orbit also contributes
![Page 9: Mars Basics. Size & Distance Smaller than Earth (0.532x) Mars diam ~ 6779 km (4212 miles) Earth diam ~ 12,742 km (7918 miles) 8 Mars would fit](https://reader030.vdocuments.site/reader030/viewer/2022032705/56649dc05503460f94ab4701/html5/thumbnails/9.jpg)
Atmosphere
Yep. Mars has an atmosphere.
~95% CO2, ~3% N2, ~2% Ar; traces of O2, CO
Surface pressure ~0.006 atm (~1/100th Earth’s atmosphere)
Gerard Kuiper made spectroscopic observations of CO2 in the atmosphere in 1952; presumed to be a minor constituent until 1965
![Page 10: Mars Basics. Size & Distance Smaller than Earth (0.532x) Mars diam ~ 6779 km (4212 miles) Earth diam ~ 12,742 km (7918 miles) 8 Mars would fit](https://reader030.vdocuments.site/reader030/viewer/2022032705/56649dc05503460f94ab4701/html5/thumbnails/10.jpg)
Interior
Core, mantle, crust
No magnetic field today; data support one in the past
![Page 11: Mars Basics. Size & Distance Smaller than Earth (0.532x) Mars diam ~ 6779 km (4212 miles) Earth diam ~ 12,742 km (7918 miles) 8 Mars would fit](https://reader030.vdocuments.site/reader030/viewer/2022032705/56649dc05503460f94ab4701/html5/thumbnails/11.jpg)
Mars is ColdAverage temp: -63° C (max & min vary)
Weirdness above the surface…
![Page 12: Mars Basics. Size & Distance Smaller than Earth (0.532x) Mars diam ~ 6779 km (4212 miles) Earth diam ~ 12,742 km (7918 miles) 8 Mars would fit](https://reader030.vdocuments.site/reader030/viewer/2022032705/56649dc05503460f94ab4701/html5/thumbnails/12.jpg)
Deimos – 15 km (9.3 miles)
Phobos – 26.8 km (16.7 miles)
Moons