Monday, November 12, 2012

Physics A

Bellwork:
    1.  From the lab on friday, what did you notice about the amount of work done running versus walking?

    2.  Consider a situation where you are lifting an object into the back of a truck: how will the work done lifting     the object into the truck compare to the work done pulling the same object up a ramp into the truck?      Explain an experiment to test your predictions on this situation.

Hand in the work and power lab from Friday.

Inclined plane activity.

Discuss work, power, and energy.

HW:  Kinetic Energy and Potential Energy Problems.  We will check and go over the problems tomorrow.
We will have a quiz over this material on Friday.

Physical Science A
   
Bellwork:
    1.  How does the speed of a microwave compare to the speed of an ultraviolet wave?

    2.  In general, explain how the forms of energy on the spectrum vary as you pass from the radiowave end     of the spectrum down to the gamma end of the spectrum?

    3.  How are light and sound different?   

    4.  Discuss with your table partners which form of energy you picked as the most important.

Objectives:
1.  Explain why there is a time delay between the time we send a radio message to astronauts on the moon and when they receive it.

2.  Explain why we see a distant event before we hear it (e.g., lightning before thunder, exploding fireworks before the boom).

3.  Draw ray diagrams to indicate how light reflects off objects or refracts into transparent media.

4.  Predict the path of reflected light from flat, curved, or rough surfaces (e.g., flat and curved mirrors, painted walls, paper).

Discuss Light, colors, and reflection.

Reflection activity.

HW:  Answer questions from the reflection activity.
Remember that we will have test on friday!