11/11/13

Post date: Nov 11, 2013 9:30:18 PM

Bell Ringer

• • The two waves drawn below (see bell ringers in class for pictures) cross paths. Draw the wave that results when these waves occupy the same space at the same time.

Activities

• • Check homework, questions on homework?

  • Wave behavior notes, activities

    • Reflection

      • When a wave encounters a boundary, some of it's energy is reflected

      • The reflected wave (depending on the boundary it encounters) may be inverted

    • Standing waves

      • A wave pattern created when incident and reflected waves interfere in such a way as to create certain points on the medium that don't move (nodes) and certain points that always move the most (antinodes)

      • A standing wave, when you take a snapshot of it, still looks like a sine wave. The fast motion makes the whole thing look blurry, so just trace a sine wave shape over the standing wave to help identify the wavelength.

Assignment

• • Pages 396-399: 8, 19, 21, 31, 35, 36, 43 (due Today)

Announcements

• • Chapter 11 test tomorrow