Tuesday, October 30, 2012

Physical Science A

Bellwork:
    1.  What do we call the regions found on a compression/longitudinal wave that would be analogous to     the crest and trough of a transverse wave?

    2.  What happens to the wavelength of a wave as the frequency of the wave is increased?

Quiz: wave characteristics and wave classifications

Discuss surface waves and wave speed.

Demo: wave speed

HW: wave speed problems.  Please finish the wave speed problems.  We will go over and check them tomorrow.

Physics

Bellwork:
    1.  Wrap-up the impulse momentum lab.  Be sure to use the data from your experiment to find the impulse     in terms of Avg. Force times the change in time.  Then compare that to the change in momentum using     the mass of the cart time the change in velocity.


Check and Go over the homework problems, book and packet.  Grab a whiteboard(if you borrow a marker, leave a shoe :)

Wrap-up the impulse lab.  Discuss the results.

Discuss the Conservation of Momentum and Collisions.

Hand-out the conservation of momentum problems.  Discuss and go over example.  Secondly, write a one-page explanation on running shoes.  How could you test the effectiveness of running shoes in terms of their ability to minimize the force exerted on the body.  describe how you could test all the shoes in the classroom and how you would determine which shoe was the most effective.