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WorksheetsUnit 2 Part 2 Notes 1: What is Light?
Total questions: 10
Worksheet time: 11mins
How can light can be described? (choose all that apply):
particle
wave
fractal
Frequency of light is ___ proportional to wavelength.
directly
inversely
The portion of the electromagnetic spectrum that humans can see is called:
radio waves
visible light
gamma rays
x-rays
the distance between peaks of waves is called:
wavelength
frequency
energy
Planck's Constant
The speed of electromagnetic radiation:
depends on the form of radiation
is always approximately
3 x 108 m/s, regardless of the type
decreases as distance increases
is 6.626 x 10-34 J x s
Which of the following is a unit for frequency?
Joules
Hertz
meters per second
seconds
A photon (packet of light) with a wavelength of
6.24 x 10-7 m is an example of -------- radiation.
microwave
infrared
ultraviolet light
gamma
The frequency of violet light is 7.5 E14 Hz. What is its wavelength?
4.0 E-7 m
4.0 E7 m
2.25 E23 m
2.25 E23 Hz
Violet light has a wavelength of 4.10 E-12 m. What is the frequency?
1.23 E-3 Hz
7.32 E 19 Hz
1.37 E12 Hz
3.0 E8 Hz
