1 / 38

CHAPTER 7 Comparative Planetology I: Our Solar System

CHAPTER 7 Comparative Planetology I: Our Solar System. Coming up …. 1. The important differences between the two broad categories of planets: terrestrial and Jovian. 2. The similarities and differences among the large planetary satellites , including Earth’s Moon.

lolita
Download Presentation

CHAPTER 7 Comparative Planetology I: Our Solar System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CHAPTER 7 Comparative Planetology I: Our Solar System

  2. Coming up … 1. The important differences between the two broad categories of planets: terrestrial and Jovian 2. The similarities and differences among the large planetary satellites, including Earth’s Moon 3. The categories of the many small bodies that also orbit the Sun 4. How craters on a planet or satellite reveal the age of its surface and the nature of its interior 5. Why a planet’s magnetic field indicates a fluid interior in motion 6. How the diversity of the solar system is a result of its origin and evolution

  3. Relative Sizes

  4. Relative Sizes

  5. Terrestrials - Rocky Midgets

  6. Terrestrials – Close Spacing

  7. Jovians – Gassy Giants

  8. Jovians – Large Spacing

  9. Question Which of the following is NOT a terrestrial planet? Jupiter Mars Mercury Venus Earth Time for a good French burgundy

  10. Largest Moons Galilean Moons Saturn Neptune Earth

  11. Asteroid Belt about 1.5 AU wide with centroid at 2.8 AU!

  12. Question The asteroid belt exists between the orbits of which planets? Earth – Mars Venus – Earth Mars - Jupiter Jupiter – Saturn beyond Pluto

  13. Gaspra First asteroid to be imaged— by Galileo spacecraft(1991)

  14. Kuiper Belt and Oort Cloud • Kuiper Belt extends from about 30 to 60 AU • Oort cloud, a spherical distribution, extends to about 100,000 AU!

  15. 7 Largest TNO’s

  16. Lunar Crater

  17. Crater in Quebec (200 million years ago)

  18. Lowell Crater – Southern Martian Highlands

  19. Which Eats the Most? …an elephant? …or a hummingbird?

  20. Volume to Surface Area Ratio • Consider a ‘spherical’ elephant and hummingbird… 2R R • Heat (H) stored depends on volume (V) • Rate of Heat loss (H/τ) depends on surface area (A) • Time (τ) to lose heat depends on radius (R) If you double the radius of a sphere (or the linear dimension of any object) … the time it takes to lose its store of heat doubles!

  21. Assume both planets originally heated to same temperature. Which one cools down the fastest?

  22. Magnetic Field

  23. Measuring Saturn’s Magnetic Field

  24. Question Observers using the Hubble Space Telescope detect objects orbiting a solar-type star with the following characteristics: (i) density ( >3.5 g/cm3); (ii) diameter (7000 km or less); (iii) no H 2 in its atmosphere; (iv) polar diameters about the same length as equatorial diameters; (v) solid, crustal surfaces; (vi) slow rotational periods (greater than 20 hours); (vii) weak magnetic fields; (viii) few moons. How would these objects be classified? _______ Comet nuclei Asteroids Terrestrial planets Jovial planets Meteors

More Related