Read through your lab packet
Take only the following with you: ◦ Lab packet ◦ Writing utensil(s) ◦ Blank sheet of paper You will have about 10 minutes at each station. For each station, follow the directions in your lab packet, and answer the questions as you go. After you finish, you will define each of the terms on the front page of your lab packet.
Read Conceptual Physics Chapters 29 and 31 and answer review questions ◦ Read pages ◦ Answer Review Questions #1-27 on pages ◦ Read pages ◦ Answer Review Questions #1-20 on pages
A wave travels 347 meters in 104 seconds. The frequency of the wave is 43.1 Hz. What is the wavelength of the wave? Take out your lab packet and making inferences packet. Keep them on your desk in front of you.
All about the information in the making inferences packet You must use a pencil Do NOT write on the quiz. Mark your answers only on your bubble sheet. If you appear to be talking while anyone has their quiz, you will receive a zero. When you finish, turn in your quiz and bubble sheet, and pick up a worksheet. Work silently on the worksheet until told that all quizzes have been submitted
An electromagnetic wave is traveling through earth’s atmosphere with a frequency of 1.21 GHz. a) What is its period? b) What is its speed? c) What is its wavelength? d) How would you categorize this EM wave?
Doppler Effect Polarization Refraction Interference Diffraction Reflection
The Doppler Effect is a change in frequency caused by a relative motion between the noise source and the detector. The change in frequency causes a corresponding change in period and wavelength Light: the “blue-shift” or “red-shift” is used to tell if stars are moving towards us or away
A transverse wave is polarized if it is only allowed to oscillate in one direction. Light: polarization filters or reflection Sound: longitudinal waves cannot be polarized
Refraction is a bending of a wave when it travels from one medium to another. Refraction only occurs if the speed of the wave is different in the two media The index of refraction is related to wave speed and can help us calculate how much the wave will refract
When two waves superpose, the result is called interference. ◦ interference interference Sound: PhET simulation ◦ Light: If monochromatic light passes through a double slit (two nearby holes), it will produce bands of light and dark Constructive interference is when the waves build on each other (i.e., crest meets crest) Destructive interference is when waves cancel each other (i.e., crest meets trough)
Diffraction is the spreading out of a wave Sound: can travel around corners Light: spreads out after passing through a slit Different colors of light diffract different amounts, creating a rainbow pattern
Reflection is when a wave bounces off of the boundary of a medium. Sound: bounces off walls ◦ Echoes ◦ The Oval Office Light: most of what we see is due to the reflection of light
Bending Light – Reflection and refraction ◦ light light Wave Interference – Sound and Light ◦ ve-interference ve-interference Sound – Interference and more ◦ ve-interference ve-interference
Wave Properties worksheet Waves Review
A laser beam with a wavelength of 680 nm is pointed at a whiteboard 2.7 m away. 1. How long does it take the laser beam to hit the board after it is first turned on? 2. What is the frequency of the laser beam?