What similar processes occur on Earth and Mars

What similar processes occur on Earth and Mars? Main objective: to compare and contrast physical processes that occur on both planets which produce similar landscapes

Mars: 228 km from Sun (1. 5 x further than Earth) 687 days= 1 revolution/ mars year 24. 6 hours= 1 rotation/day Tilt= 25. 2 degrees

Overview of Atmosphere Very Thin Atmosphere-CO 2 (95%carbon dioxide), N 2 ( 3%Nitrogen), Ar (1. 6%argon) *Atmospheric pressure ~100 x less than on Earth (. 224 inches vs. 29. 92 on Earth) *70 F at equator but -225 F At poles (ice at poles) -No longer has an active magnetic field (~4 billion years ago ceased due to cooling of outer core)

Overview of geology/surface properties • Gravitational strength = 3. 71 m/s/s (Earth= 9. 81 m/s/s!) • Surface largely of volcanic rock with high amounts of iron (hence the red color!) and carbonic rocks • No longer tectonically or volcanically active (no recycling of crust which returns CO 2 back to atmosphere)

Why do we believe there are similar processes? • A logical explanation is that both planets formed at relatively the same time and are composed of the same material, therefore they should experience the same physical processes. • What shapes a landform? • Physical Processes= similar landscapes?

Flat Lying Strata (rock layers) also suggest the presence of liquid running water once existing on Mars

Processes Which Shape a Planet Weathering and Erosion: Caused by: Evidence? Features Associated with Each?

Materials: 10 surface and computer generated images of Mars and Earth, Investigation Log Objectives Upon completion of this investigation, you will • identify similarities and differences between the physical processes that occur on Earth and Mars, • classify images of Earth and Mars by observing physical features in each image; Which is from Mars which is from Earth? • speculate about physical processes that create the physical features observed in each image.

1. ) How are these images similar? 2) How are they different? 3. )What similar physical feature(s )do these images have? 4. ) What physical processes could have created these landscapes? 5. )Which image is Earth? Mars?

3 -Twin Peaks, Mars 7 -Lavic Lake Desert, Earth

4: Yuty Crater, Mars 6: Meteor Crater, Earth

5: Warego Valles, Mars 11: Yemen, Earth

8: Grand Canyon, Earth 9: Sound Candor Chasma, Mars

10: North Polar Region, Mars 12: Antarctica, Earth