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An overview of the solar system, focusing on planetary interiors and surfaces. Topics include the inner and outer planets, asteroids, comets, probes, density, rotation, magnetic fields, seismic activity, accretion heating, differentiation, impact cratering, and volcanism. Students are encouraged to review chapter 9 and 10, complete homework 2, and prepare for exam 1.
Typology: Assignments
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Astro 120 Fall 2003: Lecture 12 page 1
Brief review of last time:
Solar System Probes
Reading: Chapter 9, Section 9.
Chapter 10, Section 10.1, 10.3, 10.4, 10. Homework 2: Posted soon, due 10/17 and 10/20Exam 1: Grades posted on WebCT
Astro 120 Fall 2003: Lecture 12 page 2
(density, magnetic field)
(oblateness)
(density)
With some simple physics,
compute what the inside of theEarth might be like
Astro 120 Fall 2003: Lecture 12 page 3
Astro 120 Fall 2003: Lecture 12 page 4
residual heat from formation
initially fully mixed (at formation)
accretional heating
Astro 120 Fall 2003: Lecture 12 page 5
Astro 120 Fall 2003: Lecture 12 page 6
M,V,E,M, Moon(s), asteroids
Processes that Alter Planetary Surfaces
Astro 120 Fall 2003: Lecture 12 page 7
dust to pebble sized rubble over entire surface
(Mercury,Venus, Moons, Mars,
Asteroids)
rubble
ejecta
ejecta
rim
Astro 120 Fall 2003: Lecture 12 page 8
Mercury
Text
Moon
Moon
Earth
Mars
Eros
Ganymede(Ice geology)