frequency
Frequency is measured in hertz. This topic is part of Waves within Science & Nature. This page currently draws on 65 supporting questions, with answers and bonus facts available below.
frequency trivia questions
Frequency measures how many wave cycles occur per what?
Answer: Second
Bonus fact: Frequency is measured in hertz.
At constant wave speed, increasing frequency causes wavelength to do what?
Answer: Decrease
Bonus fact: Wave speed equals frequency times wavelength.
In electronics, what type of filter allows low-frequency signals through while reducing high-frequency signals?
Answer: Low-pass filter
Bonus fact: Low-pass filters pass frequencies below a cutoff and attenuate higher frequencies.
What acoustic phenomenon occurs when an object vibrates strongly at one of its natural frequencies?
Answer: Resonance
Bonus fact: Resonance can greatly increase vibration amplitude.
Ultrasound uses sound waves with frequencies above what humans can usually hear?
Answer: 20,000 Hz
Bonus fact: Ultrasound lies above the normal human hearing range.
Natural selection increases the frequency of adaptations when they improve what?
Answer: Reproductive success
Bonus fact: Traits that increase reproductive success tend to become more common.
What frequency is standardized for modern avalanche transceivers?
Answer: 457 kHz
Bonus fact: International avalanche beacons operate at 457 kilohertz.
The Doppler effect changes the observed frequency of a wave when what changes?
Answer: Relative motion between source and observer
Bonus fact: Motion changes how wavefronts arrive.
Gamma rays have very high frequency and very short what?
Answer: Wavelength
Bonus fact: They occupy the highest-energy end of the electromagnetic spectrum.
What common quartz-watch frequency is 2 to the 15th power hertz?
Answer: 32,768 Hz
Bonus fact: Dividing 32,768 by powers of two produces a one-second signal.
Which communication technology commonly uses microwave frequencies?
Answer: Satellite links
Bonus fact: Microwaves can carry high-frequency data through the atmosphere.
For waves traveling at constant speed, wavelength and frequency are what?
Answer: Inversely related
Bonus fact: As frequency rises, wavelength falls.