Class 15, ICA #14, September 25.

There were 4 clicker questions. There were 4 total marks possible.
You get 1 mark for answering each question.
I didn't count getting it right or not.

The clicker questions count for a total of 3 points toward your
course grade, so your points for the day = # of marks * (3/4).



Clicker Question #1: Copernicus

B.  hypothesizes that ours is a heliocentric Solar System.


Clicker Question #2: Galileo

A. was the first to use a telescope for astronomy.


Clicker Question #3: What couldn't ancient
civilizations have known?

B. Time it takes for one of Jupiter's moons to
go once around the planet.


Clicker Question #4: Which ellipse and orbit most
closely resembles Earth's true situation?

C. (very circular, Sun in the middle.)