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Book Review #1 Sound and Light
to be used at the end of the book
49
Science
7th Grade
12/18/2011

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Cards

Term
the height of a transverse wave from the center to a crest or trough
a. wavelength
b. amplitude
c. frequency
Definition
b. amplitude
Term
an optical instrument that uses lenses to focus light, and film or an electronic sensor to record an image of an object
Definition
camera
Term
a snail shaped tube in the inner ear that is lined with receptor cells that respond to sound
a. eardrum
b. ear canal
c. cochlea
Definition
c. cochlea
Term
any two colors that combine to form white light is called ...
a. black light
b. white light
c. electromagnetic spectrum
Definition
b. white light
Term
the part of a longitudinal wave where the particles of the medium are close together
a. rarefactions
b. compressions
c. contractions
Definition
b. compression
Term
a lens that is thinner in the center than at the edges
a. concave lens
b. convex lens
Definition
a. concave lens
Term
a mirror with a surface that curves inward
a. convex mirror
b. concave mirror
Definition
b. concave mirror
Term
cells in the retina that respond to and detect color in the eye
a. cones
b. rods
Definition
a. cones
Term
The interference that occurs when two waves combine to make a wave with an amplitude larger than the amplitude of either of the individual waves
a. destructive interference
b. constructive interference
Definition
b. constructive interference
Term
a lens that is thicker in the center than at the edges
a. convex lens
b. concave lens
Definition
a. convex lens
Term
the transparent material that covers the front of the eye
a. pupil
b. iris
c. cornea
Definition
c. cornea
Term
the highest part of a transverse wave
a. trough
b. crest
c. amplitude
Definition
b. crest
Term
A unit used to compare the loudness of different sounds
a. hertz
b. decibel
Definition
b. decibel
Term
The interference that occurs when two waves combine to make a wave with an amplitude smaller than the amplitude of either of the individual waves
a. constructive interference
b. destructive interference
Definition
b. destructive interference
Term
the bending or spreading of waves as they move around a barrier or pass through an opening
a. refraction
b. reflection
c. diffraction
Definition
c. diffraction
Term
Reflection that occurs when parallel rays of light hit an uneven surface and all reflect at different angles
a. regular reflection
b. diffuse reflection
Definition
b. diffuse reflection
Term
The change in frequency of a wave as its source moves in relation to an observer. (Think about a fire truck's siren as it goes by).
Definition
doppler effect
Term
a narrow region leading from the outside of the human ear to the eardrum
a. cochlea
b. ear canal
c. none of these
Definition
b. ear canal
Term
The small tightly stretched drumlike membrane that separates the outer ear from the middle ear, and that vibrates when sound waves strike it
a. ear canal
b. eardrum
c. cochlea
Definition
b. eardrum
Term
The use of reflected sound waves to determine distancesor to locate objects
a. electromagnetic spectrum
b. echolocation
c. constructive interference
Definition
b. echolocation
Term
The ability to do work or cause change
a. work
b. energy
c. force
Definition
b. energy
Term
The lens in the eyepiece of a microscope can magnify an image ___ times.
Definition
10 times
Term
Having the condition in which a person can see distant objects clearly and nearby objects as blurry
a. nearsighted
b. farsighted
Definition
b. farsighted
Term
The point at which light rays parallel to the optical axis meet, or appear to meet, after being reflected by a mirror
Definition
focal point
Term
The number of waves passing a given point each second.
a. intensity
b. wavelength
c. amplitude
d. frequency
Definition
d. frequency
Term
Electromagnetic waves with the shortest wavelengths and highest frequencies
a. gamma rays
b. visible light
c. infrared rays
Definition
a. gamma rays
Term
Unit of measurement for frequency
a. decible
b. hertz
Definition
b. hertz
Term
the ring of muscle that surronds the pupil and regulates the amount of light entering the eye; gives the eye its color.
a. pupil
b. iris
c. cornea
d. retina
Definition
b. iris
Term
A wave that moves the medium in a direction parallel to the direction in which the wave travels
a. compressional wave
b. longitudinal wave
Definition
b. longitudinal wave
Term
The material through which a wave travels
a. medium
b. middle
c. moment
d. minute
Definition
a. medium
Term
An optical instrument that forms enlarged images of tiny objects. It can magnify them 400 times or more
Definition
microscope
Term
Having the condition in which a person can see nearby objects clearly and distant objects as blurry
a. farsighted
b. nearsighted
Definition
b. nearsighted
Term
A type of material that reflects or absorbes all the light that strikes it
a. translucent
b. transparent
c. opaque
Definition
c. opaque
Term
What is the name of the short thick nerve that carries signals from the eye to the brain?
Definition
optic nerve
Term
An imaginary line that dividies a mirror in half
a. optical fold
b. optical acres
c. optical axis
d. optical half
Definition
c. optical axis
Term
The part of a longitudinal wave where the particles of the medium are far apart
a. compression
b. rarefaction
Definition
b. rarefaction
Term
An upside down image
a. real image
b. virtual image
Definition
a. real image
Term
One of three colors that can be used to make any other color
a. primary color
b. secondary color
Definition
a. primary color
Term
The opening in the center of the iris through which light enters
a. corena
b. pupil
c. lens
Definition
b. pupil
Term
The bouncing back of an object or a wave when it hits a surgace through which it cannot pass
a. rarefaction
b. reflection
c. refracting
Definition
b. reflection
Term
The bending of waves as they enter a new medium at an angle caused by a change in speed
a. reflection
b. refraction
c. rarefaction
Definition
b. refraction
Term
cells in the retina that detect dim light
a. rods
b. cones
Definition
a. rods
Term
A system that uses reflected sound waves to locate and determine the distance to objects under the water.
a. system
b. sonar
c. radar
Definition
b. sonar
Term
type of material that scatters light as it passes through
a. transparent
b. translucent
c. opaque
Definition
b. translucent
Term
A type of material that transmits light without scattering it
a. translucent
b. transparent
c. opaque
Definition
a. translucent
Term
The lowest part of a transverse wave
a. crest
b. trough
c. amplitude
Definition
b. trough
Term
An upright image
a. virtual image
b. real image
Definition
a. virtual
Term
Electromagnetic radiation that can be seen with the unaided eye
a. gamma rays
b. radio waves
c. visible light
Definition
c. visible light
Term
The distance between the crest of one wave and the crest of the next
a. frequency
b. wavelength
c. amplitude
Definition
b. wavelength
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