Ch22_Lecture - Today's Epitome Roll Lab 1 & 8 Returned...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
05/12/09 GEOL1401/tob 1 Today’s Epitome Roll Questions on the labs? Lecture on Ch 22 – “Touring our Solar System” Describe the general characteristics of the two groups of planets in the solar system. Describe the major features of the lunar surface and discuss the Moon's history. List the distinguishing features of each planet in the solar system. List and describe the minor members of the solar system Next Time Final Exam on 7/29 -7/30
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
05/12/09 GEOL1401/tob 2 GEOL 1401 – Chapter 22 Touring our Solar System Dr. Thomas O. Bush Roberts 116 thomasobush@comcast.net 214-333-5318
Background image of page 2
05/12/09 GEOL1401/tob 3 The solar system
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
05/12/09 GEOL1401/tob 4 Solar system includes Sun and Nine planets and their satellites Two groups of planets Terrestrial – rock like Jovian – gas like Planet's orbit lies in an orbital plane Similar to a flat sheet of paper Orbital planes are inclined Planes of seven planets lie within 3 degrees of the Sun's equator Mercury's is inclined 7 degrees Pluto's is inclined 17 degrees Asteroids Comets Meteoroids Kuiper belt Oort Cloud
Background image of page 4
05/12/09 GEOL1401/tob 5 Two groups of planets Terrestrial (Earth-like) planets Mercury through Mars Small, dense, rocky Low escape velocities Jovian (Jupiter-like) planets Jupiter through Neptune Large, low density, gaseous Massive Thick atmospheres composed of hydrogen, helium, methane, and ammonia High escape velocities Pluto not included in either group
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
05/12/09 GEOL1401/tob 6 Planets are composed of Gases Hydrogen Helium Rocks Silicate minerals Metallic iron Ices Ammonia (NH 3 ) Methane (CH 4 ) Carbon dioxide (CO 2 ) Water (H 2 O)
Background image of page 6
05/12/09 GEOL1401/tob 7 Evolution of the planets  Nebular hypothesis Solar system condensed from a gaseous nebula Planets formed about 5 billion years ago As the planets formed, the materials that compose them separated Dense metallic elements (iron and nickel) sank toward their centers Lighter elements (silicate minerals, oxygen, hydrogen) migrated toward their surfaces Process called chemical differentiation Due to surface gravities Venus and Earth retained atmospheric gases Due to frigid temperatures Jovian planets contain a high percentage of ices
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
05/12/09 GEOL1401/tob 8      The Nebular hypothesis
Background image of page 8
05/12/09 GEOL1401/tob 9 Earth's Moon  General characteristics Diameter of 3475 kilometers (2150 miles) is unusually large compared to its parent planet Density 3.3 times that of water Comparable to Earth's crustal rocks Perhaps the Moon has a small iron core Gravitational attraction is one-sixth of Earth's No atmosphere Tectonics no longer active Surface is bombarded by micrometeorites from space which gradually makes the landscape smooth
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 10
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/15/2008 for the course GEOL 1401 taught by Professor Thomasbush during the Spring '08 term at Dallas Baptist.

Page1 / 47

Ch22_Lecture - Today's Epitome Roll Lab 1 & 8 Returned...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online