Tuesday, Sept 21, 2010

Handed back Moon Phase Quizzes.
Postponed test to Thursday since results of quizzes were so bad.

Asked for results from homework calculation of ratios of height to base of triangles. Most students did not do it. When I asked why, they said they did not know how to measure with a ruler!!

Did Sun Lab

Went over results of Sun Lab

Discussed number of Earths that go across the diameter of the Sun, number of Earths that span the distance from the Earth to the Sun.

Classified planets as rocky or gas giants. Explained that gas giants can hold onto hydrogen gas because they have more mass (greater gravitational force), and are farther away from the Sun (less heating of the gas).

Showed idea between center of gravity and finding planets around other stars.

Tomorrow, divide students into pairs and do Quia review.
Test on Thursday.