Wave speed, frequency and wavelength
Grade 11 Science Worksheet - Challenge Me
Circle the best answer, or write your answer on the line.
Light travels at 299,792,458 m/s (NIST). What is the wavelength, in nanometers, of light with a frequency of 7.5 × 10¹⁴ Hz, to the nearest tenth, Bo?
Light travels at 299,792,458 m/s (NIST). What is the wavelength, in nanometers, of light with a frequency of 4.6 × 10¹⁴ Hz, to the nearest tenth, Esme?
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Ripples in one water tank (example data)
Frequency (Hz) Wavelength (cm) 2 6 3 4 4 3 6 ? Using the table, what is the ripples' speed, Jun?
- 6 cm/s
- 24 cm/s
- 12 cm/s
Using the table, what wavelength should 6 Hz ripples have, Kira?
- 1 cm
- 9 cm
- 2 cm
Milo says a high-pitched sound travels faster through air than a low one. Agree or disagree?
- Agree: high notes have longer wavelengths
- Agree: a higher frequency makes a faster wave
- Disagree: sounds in the same air share one speed
Noah says shaking a rope faster makes its waves travel faster. Agree or disagree?
- Agree: frequency and speed are the same thing
- Agree: more shakes push the waves along faster
- Disagree: the rope sets the speed
Pia says light slows down in water, so its frequency drops too. Agree or disagree?
- Agree: slower waves have lower frequencies
- Disagree: the frequency stays; the wavelength shrinks
- Agree: light can't enter water
An FM radio station broadcasts at 100 MHz. Using c = 299,792,458 m/s, about what is its wavelength, Ren?
- About 0.3 m
- About 3 m
- About 30 m
In a vacuum, how do the speeds of radio waves, visible light and X-rays compare, Tala?
- X-rays are fastest
- They are the same
- Radio waves are fastest
Red light has a longer wavelength than blue light. Which has the higher frequency, Zee?
- Blue light
- Red light
- They are the same