Download - The Inner planets Section 28.2
![Page 1: The Inner planets Section 28.2](https://reader033.vdocuments.us/reader033/viewer/2022061615/5a4d1ad67f8b9ab0599730ce/html5/thumbnails/1.jpg)
Section 28.2
THE INNER PLANETS
![Page 2: The Inner planets Section 28.2](https://reader033.vdocuments.us/reader033/viewer/2022061615/5a4d1ad67f8b9ab0599730ce/html5/thumbnails/2.jpg)
MAIN IDEA• Mercury, Venus, and Earth, and Mars have high densities and rocky surfaces
• This is why we call them the terrestrial planets
![Page 3: The Inner planets Section 28.2](https://reader033.vdocuments.us/reader033/viewer/2022061615/5a4d1ad67f8b9ab0599730ce/html5/thumbnails/3.jpg)
MERCURY• Closest to the Sun making it difficult to see from Earth
• 1/3 the size of Earth
• Has no moons
• Atmosphere is replenished by the Sun
• Atmosphere composed of oxygen and sodium
• Surface covered with craters and plains
![Page 4: The Inner planets Section 28.2](https://reader033.vdocuments.us/reader033/viewer/2022061615/5a4d1ad67f8b9ab0599730ce/html5/thumbnails/4.jpg)
SCARPS: PLANETWIDE SYSTEM OF CLIFFS
![Page 5: The Inner planets Section 28.2](https://reader033.vdocuments.us/reader033/viewer/2022061615/5a4d1ad67f8b9ab0599730ce/html5/thumbnails/5.jpg)
![Page 6: The Inner planets Section 28.2](https://reader033.vdocuments.us/reader033/viewer/2022061615/5a4d1ad67f8b9ab0599730ce/html5/thumbnails/6.jpg)
VENUS• 2nd closest to the Sun
• Has no moons
• The brightest planet in the sky
• Often called the evening star
![Page 7: The Inner planets Section 28.2](https://reader033.vdocuments.us/reader033/viewer/2022061615/5a4d1ad67f8b9ab0599730ce/html5/thumbnails/7.jpg)
• Rotates very slowly
• 1 day on Venus = 243 Earth days
• Venus rotates clockwise (opposite to most)
• Very similar to Earth in diameter, mass, and density
• Clouds on Venus consist of sulfuric acid
• Greenhouse effect causes the high concentration carbon dioxide in the atmosphere to keep Venus’ surface temperature hot enough to melt lead.
• Venus is the hottest planet
![Page 8: The Inner planets Section 28.2](https://reader033.vdocuments.us/reader033/viewer/2022061615/5a4d1ad67f8b9ab0599730ce/html5/thumbnails/8.jpg)
EARTH
![Page 9: The Inner planets Section 28.2](https://reader033.vdocuments.us/reader033/viewer/2022061615/5a4d1ad67f8b9ab0599730ce/html5/thumbnails/9.jpg)
• It’s distance from the Sun and nearly circular orbit are perfect for life which allow water to exist in all three states
• It’s mild greenhouse effect and moderately dense atmosphere of Nitrogen and Oxygen are also perfect conditions for life
• Most tectonically active terrestrial planet
• Has one moon
![Page 10: The Inner planets Section 28.2](https://reader033.vdocuments.us/reader033/viewer/2022061615/5a4d1ad67f8b9ab0599730ce/html5/thumbnails/10.jpg)
MARS• Called the ‘red planet’ because of its reddish surface
• Smaller than Earth and less dense
• Has two moons: Phobos and Deimos
• Thin atmosphere
• Constant wind and dust storms
![Page 11: The Inner planets Section 28.2](https://reader033.vdocuments.us/reader033/viewer/2022061615/5a4d1ad67f8b9ab0599730ce/html5/thumbnails/11.jpg)
SURFACE• Northern hemisphere: cratered plains
• Southern hemisphere: cratered highlands
• Four gigantic volcanoes near equator
• Largest: Olympus Mons
• Ice caps on both poles
![Page 12: The Inner planets Section 28.2](https://reader033.vdocuments.us/reader033/viewer/2022061615/5a4d1ad67f8b9ab0599730ce/html5/thumbnails/12.jpg)
TECTONICS• Valles Marineris: 10 times the length of the Grand Canyon
• There is currently NO plate movement. The volcanoes and canyons were caused by hot spots of volcanic activity
• Erosion patterns suggest that water once existed on Mars
![Page 13: The Inner planets Section 28.2](https://reader033.vdocuments.us/reader033/viewer/2022061615/5a4d1ad67f8b9ab0599730ce/html5/thumbnails/13.jpg)
MARS CURIOSITY
![Page 14: The Inner planets Section 28.2](https://reader033.vdocuments.us/reader033/viewer/2022061615/5a4d1ad67f8b9ab0599730ce/html5/thumbnails/14.jpg)
![Page 15: The Inner planets Section 28.2](https://reader033.vdocuments.us/reader033/viewer/2022061615/5a4d1ad67f8b9ab0599730ce/html5/thumbnails/15.jpg)
![Page 16: The Inner planets Section 28.2](https://reader033.vdocuments.us/reader033/viewer/2022061615/5a4d1ad67f8b9ab0599730ce/html5/thumbnails/16.jpg)
![Page 17: The Inner planets Section 28.2](https://reader033.vdocuments.us/reader033/viewer/2022061615/5a4d1ad67f8b9ab0599730ce/html5/thumbnails/17.jpg)