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Which has the higher wavelength: infrared or UV rays?
UV rays
Microwave ovens heat up food by heating the _______ in the food.
water molecules
Which is faster? A light wave or sound wave?
light
Name an opaque object.
wood, stone, metal, etc.
Name a translucent object.
frosted glass, sunglasses, tinted windows, single sheet tissue paper, oil, etc.
Give an example of something that is transparent.
window, lens, glass, air, window, clear water bottle, etc.
A louder sound increases the ______ of a wave.
amplitude.
A sound wave is a type of _______ wave.
compression
What color light is a mixture of all colors of the visible light spectrum?
white
Why does a banana appear yellow?
the other colors of the visible light spectrum are absorbed and yellow is reflected
If an incident ray of light hits a surface at an angle of 50 degrees, what will the angle of the reflected ray be?
50 degrees
What are the three primary colors of light
red, green, blue
What is seen in this picture?
transmission
What is seen in this picture?
absorption
What is seen in this picture?
reflection
What is seen in this picture?
refraction
he number of waves passing a point in a unit of time is called?
frequency
Which type of electromagnetic radiation do we use sunblock to protect against?
ultra-violet
Which type of electromagnetic radiation is used to capture images of bones?
x-radiation
Which type of electromagnetic wave is used to transmit cell phone signals?
radio
Which type of electromagnetic radiation is used to kill cancer cells?
gamma
Explain the relationship between pitch and frequency of a sound wave.
a higher pitched sound has a higher frequency
What is the major difference between sound and light waves?
Light waves do not need a medium to travel through.
Name the colors of light on the visible spectrum, in order, starting with the largest wavelenght.
red, orange, yellow, green, blue, indigo, violet
Which type of waves on the electromagnetic spectrum has the lowest frequency?
radio
Which type of waves on the electromagnetic spectrum has the highest frequency?
gamma
What type of wave is pictured here?
electromagnetic
What type of wave is shown here?
transverse
What does letter A represent on this wave?
crest
What type of wave is shown here?
compression
What does letter D represent on this wave?
wavelength
What does letter C represent on this wave?
trough
Frequency is measured in ______.
hertz
In a given medium, if the frequency increases, the wavelength ________.
decreases
The maximum distance the molecules of a medium are displaced from their rest position is the
amplitude
Wavelength is the distance between
Two consecutive crests or troughs
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