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WorksheetsELECTROMAGNETIC WAVES
Total questions: 20
Worksheet time: 16mins
What symbol is used for the speed of light?
(a)
What is the following equation used to calculate?
fc=λ
(a)
Which of the following is NOT a physical constant?
2.997 E 8 m/s
9.8 m/s 2
94,900,000 Hz
6.626 E -34 J * sec
TRUE or FALSE: red light waves are bigger than blue light waves.
True
False
Electromagnetic waves moving through the vacuum of space can vary in all of the following ways, EXCEPT:
frequency
energy
wavelength
speed
The prisms used in spectroscopy separate electromagnetic waves on the basis of:
size
energy
speed
frequency
What is the approximate length of a light wave whose frequency is 1,000,000 Hz?
300 meters
1,000,000 meters
300 nanometers
299,700,000 m/s
What number is represented by the expression 1 E 9 ?
(a)
Choose the TRUE statement.
A blue light wave is longer than a red light wave.
A red light wave has a lower frequency than a blue light wave.
A blue light wave has less energy than a red light wave.
A red light wave has a higher speed than a blue light wave.
All of the following waves are more energetic than visible light, EXCEPT:
radio waves
ultraviolet waves
X-rays
gamma rays
All of the following waves are longer than visible light waves, EXCEPT:
infrared waves
microwaves
TV waves
ultraviolet waves
When an electron leaves the __________ state, the difference in energy between the two states produces an electromagnetic wave.
ground
energy
solid
excited
The (a) model, proposed in 1913, describes a small, dense nucleus surrounded by orbiting electrons, like a miniature solar system.
If a wave is 299.7 meters long, what is the frequency of that wave in Hz (cycles per second)?
(a)
What is the speed of light, in meters per second?
(a)
Which of the following wavelengths in nanometers (nm) is most likely to have a green color?
400
680
540
720
Write the equation in which the product of Planck's constant and a frequency of light provides the energy for that particular 'color' of light:
(a)
Green plants convert light energy from the Sun into stored chemical energy through the process of photosynthesis by using green pigments like chlorophyll. These pigments:
absorb red light and reflect blue and green light
absorb green light and reflect red and blue light
reflect red light and absorb blue and green light
reflect green light and absorb red and blue light
reflect green light and red light, but absorb blue light
What is the frequency of an AM radio station who produces radio waves that 499.5 meters long?
500,000 Hz
600,000 Hz
700,000 Hz
800,000 Hz
Which of the following electromagnetic waves is the slowest?
infrared waves
ultraviolet waves
X-rays
gamma rays
none of the above
