Soggy Monday

An ark - get one...

Honors Physics reviewed basic ideas about refraction and Snell’s Law before moving to mirrors. Converging and diverging lenses were discussed and patterns of image formation for each type of mirror was diagrammed. Tomorrow’s lab will allow students practice working with both types of lenses and both the thin lens equation and the magnification formula.

Physical Science B had a very hard time in lab today, since it is a tremendously wet day and the lab focused on static electricity. On wet days, there is an abundance of water molecules in the air that work to neutralize charges that objects acquire. That is why static cling is worst on dry days. But, the basic ideas were visible – objects can acquire a charge through friction, conduction or induction and that the resulting forces can produce a change in the motion of objects. There was time in class, also, to review over the Coulomb’s Law problems that were assigned for homework.

Physical Science E completed their discussion of electric field lines and field-line diagrams and then spent time working problems for Coulomb’s Law. The solutions are presented in Friday’s post, so check your work to see how you did before coming to class tomorrow. We’ll review these problems tomorrow and then turn attention towards electric current.

Physics F and G completed their discussion of light polarization and then started in on the refraction chapter. Refraction will occur when light crosses from one medium to a different medium. The properties of the second medium determine light’s new speed and path of travel. Using Snell’s Law, that new direction can be predicted and time was taken in class to practice working problems with Snell’s Law. Tomorrow – finishing up refraction for G Block and on to lenses for F Block.

Homework

Honors Physics A: Read lab protocol sheet for tomorrow and complete Practice 15B for Wednesday
Physical Science B: Complete lab write up and rework Coulomb’s Law problems, if necessary
Physical Science E: Complete Coulomb’s Law worksheet
Physics F: Conceptual Challenge p. 565, Practice 15A and 15.1 Section Review
Physics G: Ch14 Chapter Review #40,44; read 15.1 and complete the 15.1 Section Review