The next unit we will explore is the waves unit. We are going back to the fill-in style of handout. This unit corresponds to pages 375 - 449 in the text. We will learn about the different types of waves. This will include optics and acoustics.
Energy is transferred from one place to another in a variety of ways. This unit will focus on energy moving by way of waves. Waves transmit energy from one place to another. There are three major classification of waves. Grab a slinky and see if you and a partner can find all three.
The three major types are:_________, __________, and _________. Draw each of the three types of waves here:
The electromagnetic spectrum (light et al) is an example of a transverse wave. Let’s explore optics.
Sound is an example of longitudinal waves. Let’s explore sound.
Water is an example of a rayleigh wave.
Why do we have two eyes and two ears?
Draw and label a transverse wave.
What does the amplitude tell us?
What does the wavelength tell us?
Just as you can hit and affect an ocean wave, all waves can be disturbed. The interference can be constructive, destructive, or one that shifts the wave length.
When the object making the waves is moving, it bends the waves in front and behind. This allows us to detect if something is moving and is called the Doppler Effect.
Draw the doppler effect:
When a wave hits another surface, it can reflect (bounce off), or refract (bend its direction).
straw in water demo, pool balls
When a wave is not moving, it is called a standing wave.
Draw and label a wave
List and describe the three types of waves
Describe the doppler effect
Know about light and sound
If you have enjoyed the topics in this unit, feel free to investigate further. Here are some ideas. These are NOT required, but I hope you have fun and delve into some of them:
There are other types of waves besides the big three we talked about. What are they? How are they different from the three we learned about.
Optics is fun. Play around with light waves more. Create lenses. How do glasses work? Explore optical illusions. Use mirrors and magnifiers.
Explore acoustics. Sound waves are longitudinal waves. Take apart a speaker to see how it works. Listen to “surround sound”--why does that work. Look into Bose’s sound room or Heathrow's antisound lounges.
Create a demo / visual to explain the doppler effect. Build something that other Riversiders can use to understand this complex idea that moving changes the waves.
I demonstrated a standing node. What factors are affect those nodes. I would love to get three nodes. How can I do it?