SOUND AND LIGHT STUDY GUIDE

Parts of the eye: Use the following parts of the eye -- PUPIL, LENS, OPTIC NERVE, IRIS,RETINA–to answer the following questions.

  1. This carries image signals to the brain.
  2. The curved part behind the pupil that can get cataracts from UV light and cause vision to be cloudy.
  3. The colorful part you see when you look at a person’s eyes.
  4. This is the “screen” inside the eye that the image is shown on.
  5. Contains the rods and cones in the eye.
  6. The blind spot is where this enters the eye.
  7. A ring of muscle that expands or contracts depending on the amount of light.
  8. This is a hole in the eye through which the light enters.
  9. This refracts incoming light and focuses images on the back of the eye.

Match these EM (electromagnetic) waves --MICROWAVES, RADIO,GAMMA,VISIBLE LIGHT,ULTRAVIOLET -- with the descriptions in the following 8 questions

  1. These are used to kill cancer cells in humans.
  2. Radar is this type of wave.
  3. This type of wave is the only EM wave we can see.
  4. Which of the above waves has the longest wavelength?
  5. Which of the waves above carries the most energy?
  6. Which of the waves above has the shortest wavelength?
  7. Which of the waves above has the lowest frequency?
  8. Which of the waves abovecauses sunburn and cataracts?

Use the terms STIRRUP, COCHLEA, COCHLEAR NERVE, HAMMER, ANVIL, PINNA, TIMPANIC MEMBRANE to answer the next questions.

  1. What are the bones of the inner ear?
  2. Within the ear, the stereo cilia turn mechanical waves into electrical impulses in the
  3. The electrical impulses are transmitted to your brain via the
  4. The part of your ear that sticks out from your head is the
  5. Another names for the ear drum is the
  6. If your eardrum is damaged it (will) (will not) usually grow back (circle one).
  7. If your stereo cilia are damaged, they (will) (will not) regenerate (circle one).
  8. If I asked you what we call the material that a wave travels through, you would respond

.

  1. What do waves carry from one place to another?
  1. The loudness of sound waves is measured in units of
  1. Which wave property changes as the energy of a sound wave changes?
  1. Sound is a disturbance caused by vibrations that travels through a medium as what type of wave?
  1. In the same medium, all electromagnetic waveswill travel at the same
  1. Sound waves DO NOT travel through
  1. Sound will travel the slowest in , faster inand the fastest in
  1. How fast is sound compared to the speed of light?
  1. The pitch of a sound you hear depends on the ______of the sound wave.
  1. If I said “you have green eyes”, I am describing your
  1. The speed of light in outer space is about
  1. How high or low a sound appears to your ears is known as the
  1. Which color has the longest wavelength? Which color has the shortest wavelength?
  1. A piece of paper willappear to beblue because
  1. A piece of paper will appear to be white because
  1. A piece of paper will appear to be black because
  1. Perpendicular or parallel? Longitudinal waves move while transverse waves move to the direction of travel.
  1. Longitudinal waves have areas where the molecules are tightly packed together called and areas where molecules are spread out called

Match the terms below to the correct locations on the following diagram.

  1. Wavelength
  2. Amplitude
  3. Crest
  4. Trough

Identify if the waves are undergoing REFLECTION, REFRACTION, DIFFRACTION, ECHO or INTERFERENCE in the scenarios below.

  1. The EM waves slow down as they enter a different medium.
  1. The waves bounce off of a surface (in sound waves, this is called .)
  1. Waves that are in phase combine to form a wave with a higher amplitude is called constructive
  1. Waves are split into rainbows and areas of white light and shadows
  1. Waves that are out of phase combine to form a wave with a higher amplitude is called constructive
  1. Rainbows formed during periods of sunlight during rain showers are caused by
  1. Waves that travel through a small slit or hole
  1. The angle a light ray enters a shiny surface (like a mirror) is called the angle of

while the angle it reflects is called the angle of

  1. What unit is used for wave frequency?
  1. If a 10 waves pass a given point in 2 seconds, what is its frequency?
  1. A waves frequency is 4Hz. How many waves will pass a given point in 5 seconds?
  1. What is the formula used to calculate wave speed?
  1. A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave?
  1. A wave has frequency of 5 Hz and a speed of 25 m/s. What is the wavelength of the wave?
  1. A wave has wavelength of 10 m and a speed of 340 m/s. What is the frequency of the wave?

Complete the following diagrams, labeling the parts of the eye and the parts of the ear.

Eye A-______

Eye B-______

Eye C-______

Eye D-______

Eye E-______

Ear A-______

Ear B-______

Ear C-______

Ear D-______

Ear E-______

Ear F-______

Ear G-______