The Solar System

CHAPTER 20 | EARTH: THE STANDARD OF COMPARATIVE PLANETOLOGY 433 sections of Earth’s crust are in rapid motion relative to the 4. ...

Pacific Ocean Plate motion Plate motion Mantle Plate motion Subduction zone Atlantic Ocean Midocean rise S. America Africa Melti ...

Mike Seeds National Geophysical Data Center HawaiiHawaii Not long ago, Earth’s continents came together to form one continent. P ...

436 PART 4^ |^ THE SOLAR SYSTEM similar to water on Earth. Th ose data suggest that there may be major diff erences in compositi ...

CHAPTER 20 | EARTH: THE STANDARD OF COMPARATIVE PLANETOLOGY 437 greenhouse eff ect (■ Figure 20-10a). When sunlight shines throu ...

438 PART 4^ |^ THE SOLAR SYSTEM overall albedo is 0.39, meaning it refl ects back into space 39 percent of the sunlight that hit ...

CHAPTER 20 | EARTH: THE STANDARD OF COMPARATIVE PLANETOLOGY 439 ■ Figure 20-11 (a) Satellite observations of ozone concentration ...

440 PART 4^ | THE SOLAR SYSTEM Summary ▶ Earth is the standard of comparative planetology (p. 425) in the study of the Terrestri ...

CHAPTER 20 | EARTH: THE STANDARD OF COMPARATIVE PLANETOLOGY 441 Discussion Questions If you orbited a planet in another solar s ...

442 Guidepost Want to fl y to the moon? You will need to pack more than your lunch. There is no air and no water, and the sunlig ...

CHAPTER 21 | THE MOON AND MERCURY: COMPARING AIRLESS WORLDS 443 Th at’s one small step for [a] man... one giant leap for mankind ...

444 PART 4^ |^ THE SOLAR SYSTEM Th ose lava fl ows suggest volcanism, but only small traces of past volcanic activity are visibl ...

CHAPTER 21 | THE MOON AND MERCURY: COMPARING AIRLESS WORLDS 445 politics, and the stimulation of technology than to science, the ...

Impact Cratering NASA NASA NASA Tycho Euler Rays Tycho Rays Visual-wavelength imageVisual-wavelength image VisualVisual Visual A ...

Time before present (billion years) Rate of Crater Formation Cratering rate relative to present 106 105 104 103 102 10 1 4 321No ...

448 PART 4^ |^ THE SOLAR SYSTEM The So-Called Scientifi c Method Why is playing catch more than just looking at the ball? Like a ...

CHAPTER 21CHAPTER 2CHAPTER 211 ||| THE MOON AND MERCURY: COMPARING AIRLESS WORLDSTHETHE MOON AND MERCURY: COMPARING AIRLESS WORL ...

450 PART 4^ |^ THE SOLAR SYSTEM were extremely dry. Almost all Earth rocks contain 1 to 2 percent water, either as free water tr ...

CHAPTER 21 | THE MOON AND MERCURY: COMPARING AIRLESS WORLDS 451 meteorites. Th e smallest meteorites, the micrometeorites, do th ...

452 PART 4^ |^ THE SOLAR SYSTEM about 2 billion years ago. Th is formed the maria (■ Figure 21-6). It is a Common Misconception ...