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Light Spectrum and Wave Theory
Terms in this set (41)
On the electromagnetic spectrum, which form of radiation has wavelengths shorter than visible light?
How does infrared radiation compare to visible light?
Infrared radiation has longer wavelengths than visible light
Astronauts wear suits that protect them from what form of energy?
Which form of electromagnetic energy has the longest wavelength?
Which part of solar energy can cause sunburn and skin cancer?
UV rays from the sun are dangerous because they can damage skin. Why do they cause damage?
They are high in energy
A remote control uses an infrared frequency. Which color of the visible spectrum is most similar to it?
Electromagnetic waves, such as TV signals, that have a greater wavelength than microwaves are called ________.
What form of energy has a wavelength shorter than visible light?
How does the frequency of infrared waves compare to the frequencies of visible light?
Infrared waves have a lower frequency
Green plants appear green because they ____________.
Reflect green light and absorb all other colors
An object reflects all wave lengths of light. What color does it appear to be?
What determines an objects color?
The light it reflects
What happens to the light that hits a green object?
Green light is reflected, and all other colors are absorbed
Which characteristic of a surface determines the frequencies of light it will reflect?
the type of matter on its surface
Which of the following statements about visible light is true?
Visible light makes up the smallest part of the electromagnetic spectrum
What makes an object blue?
The object reflects blue light
Which part of the electromagnetic spectrum is visible?
A tiny part of it
What is the relationship between visible colors and the electromagnetic spectrum?
Visible light is a small portion of the middle of the electromagnetic spectrum
Some traffic signs are painted bright yellow. In order for these signs to be seen at night, what must be true about the color frequencies coming from car headlights?
The light source must include yellow light
What color is produced when red light combines with green light?
Which set of three colors has the lowest frequencies of light?
Red, orange, and yellow
Under a pure red light, a pure blue ball would look _________.
Which color light wave has the highest frequency?
Insects can see colors from blue to those that go beyond violet on the color spectrum. This means that insects see __________.
Higher frequencies that humans see
Which of the following types of light is invisible?
Under a pure violet light, a bright red balloon appears to be black. What is happening?
A pure red surface doesn't reflect violet light
Which of the following is not true of a yellow object?
It reflects all colors including yellow.
Which part of an object determines the colors of light it reflects?
High-frequency electromagnetic waves have a _________ wavelength and ___________ energy.
Light travels through space at 300,000km per second. But it can have different frequencies because ____________.
Light frequency is determined by how long or short the waves are.
A wave's frequency refers to ____________.
The number of wavelengths passing by a given point in a period of time.
Which would create the highest frequency?
100 waves in 10 seconds
What does wavelength measure?
The length of one wave in a series
BUMBLEBEE HONEYBEE MOSQUITO: THE ORDER IS:
BUMBLEBEE HONEYBEE MOSQUITO
Which wave series would have the lowest frequency?
60 waves in 60 seconds
We know that light travels as wave energy because it ________________.
Has frequency and amplitude
What unit is frequency measured in?
Which is a property of light?
Although light travels in a straight line, it also ___________.
Behaves like a wave
In the spectrum of visible light, which color represents the longest wavelength?
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