Phys. Science Honors Waves Test
A wave has a frequency of 4 Hz Determine the period of the wave.
?
What are the 3 main regions of the ear?
Inner, outer, middle
Who was the color wheel first invented by?
Isaac Newton
Which of the following describes the effect of a concave mirror on light rays?
It reflects light rays inward
Name three uses for each type of wave
T-Waves - vibrations in strings, ripples on water surface and electromagnetic waves L-Waves - Sound waves, seismic P-Waves, Particle velocity S- Waves - waves in the ocean and ripples in a cup of water
How can X-Rays make pictures of the inside of solid objects?
X-rays have high energy and can penetrate matter that light cannot
Explain the difference among opaque, transparent, and translucent materials. Name two objects made from each type of material.
a transparent object is one that lets light pass through with no shadows formed, eg. clear window, clear glass jar
What determines the loudness of a sound wave?
amplitude
The energy of sound waves has been converted into an electronic signal that can what?
be processed and stored
What color does blue paint absorb the least of?
blue
How do musical instruments vary pitch?
changes the frequency of standing waves
What is the worlds main source of light?
sun
List the kinds of waves included in the electromagnetic spectrum, from longest to shortest
radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays
What are the primary colors of light?
red, green, blue
Which term describes the process of a wave bouncing off a surface?
reflection
At what angle do transverse waves travel?
right
Formula for speed of a wave
s=wf
What is an example of a compression wave?
slinky
Through what does a wave carry energy?
solid, liquid, space
What is the amplitude of a wave?
the distance from the center line (or the still position) to the top of a crest or to the bottom of a trough.
If the frequency of a wave doubles, which of the following could be true?
the pitch gets higher
Are fluorescent light bulbs used in schools and buildings ?
true
True or False: Moving particles produce electromagnetic waves.
true
Electromagnetic waves are made by...
vibrating electrical charges
How are speed, wavelength, and frequency related?
wavelength=speed/frequency
Is a mirror semi-reflective?
yes
How fast does light travel in a vacuum?
3.00 x 108 m/s
What makes red, green and blue primary colors?
Primary colors cannot be made from other colors
How is radar used to determine the speed of a car?
Radar sends out radio waves and uses the change in frequency of the reflected waves to calculate the speed of an object
Which of the following describes what happens when waves run into each other and become larger?
constructive interference
The highest point of a wave
crest
An electromagnetic field exists only when there is a...
current
What is the process in which white light separates color?
dispersion
A sound with a high pitch will always have a high what ?
frequency
What unit is frequency measured in?
hertz
light is emitted when an object gets hot enough to glow
incandescent
What happens to the intensity of light as photons move away from the light source?
it decreases
Which of the following describes the effect of a Convex mirror on light rays?
it reflects light rays outwards
What source of light generates a beam of coherent light?
laser
What are the 3 main types of mechanical waves?
longitudinal, transverse, surface
