Basic Details
Word: Ultrasonic
Part of Speech: Adjective
Meaning: Referring to sound that is too high in frequency for humans to hear, usually above 20,000 hertz.
Synonyms: High-frequency, supersonic
Antonyms: Subsonic, infrasonic
Idioms and Phrases
- Ultrasonic waves: Used in science to refer to sound waves with frequencies above the audible range. Example: "Doctors use ultrasonic waves for imaging in medical scans."
- Make an ultrasonic leap: To make a significant advance or improvement quickly or dramatically. Example: "The company made an ultrasonic leap in technology, improving their products in just a year."
Usage Examples
Example 1: Ultrasonic cleaning devices use high-frequency sound waves to clean delicate items like jewellery.
Example 2: Bats use ultrasonic sounds to navigate and locate their prey in the dark.
Example 3: The ultrasonic pest repellents can deter rodents without harming them.
Fun Fact
Did you know that some animals, such as dolphins and bats, can hear ultrasonic sounds? They use these high-frequency sounds for communication and navigation!
Famous Quote
"Sound is a problem which, if we do not solve it, will cost us dearly." John Cage
Multiple Choice Questions (MCQs)
1. What does "ultrasonic" mean?
a) A low-frequency sound
b) A sound that is too high for humans to hear
c) A kind of visual aid
d) A type of music
Answer: b) A sound that is too high for humans to hear
2. Which of these is a synonym of "ultrasonic"?
a) Subsonic
b) Harmonic
c) High-frequency
d) Noisy
Answer: c) High-frequency
3. What is the antonym of "ultrasonic"?
a) Infrasonic
b) Clear
c) Loud
d) Low
Answer: a) Infrasonic
4. Which sentence uses "ultrasonic" correctly?
a) We measured the ultrasonic waves in the playground.
b) The ultrasonic bird sang beautifully.
c) The researcher used ultrasonic technology to clean equipment.
d) The ultrasonic fish jumped out of the water.
Answer: c) The researcher used ultrasonic technology to clean equipment.
5. Which idiom refers to the use of ultrasonic technology?
a) Make an ultrasonic leap
b) Cold as a stone
c) As quiet as a mouse
d) Burst the bubble
Answer: a) Make an ultrasonic leap
