Lecture 11 2/11/2013 12:24:00 PM
Time limit: 1 hour
50 questions, MC
covers chapter 1-3, but a little bit less on chapter 1, more on chapter 1.
Bring a calculator, but only a couple of questions require actual calculations.
Formulas and exact numbers you need will be given—you just need to know
how to use them.
Some questions ask you to remember some of the basics, others ask you to
apply what you know in some of the ways we’ve practiced.
Chapter 1 Highlights:
An overview of our current understanding of the universe.
You should be able to:
o Describe what structures are bigger than what other
structures (example, solar system is part of the milky way
galaxy, galaxies are part of clusters, etc.)
o Describe the approximate relative sized of things (example: is
Jupiter a million times bigger across than earth, or is it more
like 10 times?)
o Know what the following mean: astronomical units, light year.
o Understand how to write a number in scientific notation.
Know how to convert units: for example, if 1 au = 1.5x10^8 km,
then how many km is 5 au?
Know very approximately the sized of things, enough to be able to
pick them out on a multiple choice list
Chapter 1 summary:
We live on a planet, orbiting a star, forming part of a solar system,
inside a galaxy, which is part of a cluster and supercluster.
Superclusters form even bigger structures like walls, filaments,
o Make it easier to write and compare very large or very small