NAME:______
REVIEW: WAVE UNIT TEST
In order to prepare for tomorrow’s unit test on waves, complete this review sheet. In addition to preparing you for the test, you will earn 10 extra credit points toward the test for completing the assignment.
8-6.1 Recall that waves transmit energy but not matter
8-6.2 Distinguish between mechanical and electromagnetic waves
Write E if the statement describes electromagnetic, M if it is mechanical or B if it describes both.
______waves have some electrical properties and some magnetic properties
______can travel through a vacuum (empty space)
______water waves
______vibrate up and down perpendicular to the direction of wave travel
______compression and transverse are types
______transfers energy not mater
______can transfer energy without a medium
______X-rays
8-6.3 Summarize factors that influence the basic properties of waves (amplitude, frequency, wavelength and speed).
- Match the following words with the correct definition.
___ Wavelengtha. the number of waves that pass a point in 1 second
___ Amplitudeb. the height of a wave from the rest position to the crest or the rest position to the trough
___ Frequencyc. the length of a wave; measured from crest to crest or trough to trough
- Label the amplitude and wavelength on the diagram below.
8-6.4 Summarize the behavior of waves (refraction, reflection, absorption, transmission)
Define the following terms:
REFLECTION:
REFRACTION:
ABSORPTION:
TRANSMISSION:
What wave behavior is illustrated in the following pictures?
______
8-6.5 Explain hearing in terms of the relationship between the ear and sound waves
Sound is collected by the outer ear and directed through the outer ear canal. The sound makes the eardrum vibrate, which in turn causes a series of three tiny bones (the hammer, the anvil, and the stirrup) in the middle ear to vibrate. The vibration is transferred to the snail-shaped cochlea in the inner ear; the cochlea is lined with sensitive hairs which trigger the generation of nerve signals that are sent to the brain.
______directs the vibrations of the sound into the ear
______first part of the inner ear that detects the vibrations
______three tiny bones (anvil, hammer and stirrup) that amplify sound are located here
______area lined with hairs that create the nerve signals that are sent to the brain
______Where the vibration message is actually heard and is translated into messages
8-6.6 Explain sight in terms of the relationship between the eye and the light waves emitted or reflected by an object.
1. Label the following parts of the eye: Cornearetinalens iris optic nerve pupil
2. Name the part of the eye that performs the task explained.
______carries the signals generated by the rods and cones to your brain
______colored part of the eye that controls the size of the pupil
______Located at the back of the eye and is made up of two different kinds of cells that are sensitive to brightness and color, rods and cones
______can change its shape in order to focus the light and allow us to see clearly
______connection between eye and brain
______refracts light and focuses it on the retina
______opening in the eye that control the amount of light allowed in
3. What is the pathway of light that allows the man to see the chair?
- Light bulb man’s eyes chair
- Man’s eyes light bulb chair
- Chair light bulb Man’s eyes
- Light bulb chair Man’s eyes
8-6.7 Explain how the absorption and reflection of light waves by various materials result in the human perception of color.
- What happens when white light strikes a black object?
- How would a red rose look under blue light? Why?
- What happens to the light when it strikes a white object?
- Use the words reflect and absorb to explain why a shirt appears green.
8-6.8 Compare the wavelength and energy of waves in various parts of the electromagnetic spectrum
The following diagram shows the types of waves that make up the electromagnetic spectrum. They all travel at the same speed and are all invisible to humans except for visible light.
However, they differ in their wavelengths, frequencies, amplitude and uses.
Determine the wave described in each statement.
______have the longest wavelength in the electromagnetic spectrum
______cell phones use to transmit and receive signals
has the smallest wavelength and the most energy of all waves
______see these waves as the colors of the rainbow
______responsible for causing our sunburns
______highest frequency and the most energy
______carry signals to television sets and radios
______shorter wavelengths than radio waves, which heat the food we eat
______help your body produce vitamin D
______they pass easily through the skin allowing doctors to look at our bones
______can be used to treat cancer by killing diseased cells