Knowt Sound Waves Quiz and Review Guide ANSWERS

• Energy Wave

• Self-propagating waves of electric and magnetic fields that carry energy and momentum.

Sound

vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear.

• Vibrations

rapid, back-and-forth movements of particles around an equilibrium point

Speaker

the presiding officer in a legislative assembly, especially the House of Representatives.

• Electromagnetic Force

one of the four fundamental forces, governing interactions between electrically charged particles, combining electric and magnetic effects into one unified force mediated by photons, responsible for holding atoms together, creating light, and driving electricity and magnetism, attracting opposite charges (protons and electrons) while repelling like charges (protons with protons, electrons with electrons)

• Crest

the top of something (like a wave or hill), a decorative emblem (especially in heraldry on helmets), a showy growth on an animal's head, or the brand of oral hygiene products

• Trough

a long, narrow, open container for animal feed/water, a channel for water (like a gutter), or any long, low depression (like between waves)

• Wavelength  

the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.

Amplitude

the extent, size, or magnitude of something

• Frequency

the rate of a repeating event per unit of time

• Rest line

"Restline" can refer to various products, most commonly Restline Premium Bedding for bed bug mattress encasements, or a WordPress theme for massage/spa businesses, but it might also be a typo for Restylane, a popular dermal filler brand, or Restlinens, a bedding company. Context is key, but often relates to sleep, protection, or booking services. 

• Pitch

the highness or lowness of a sound (frequency), the angle or steepness (like a roof or propeller), a short sales presentation for an idea, the act of throwing in sports (especially baseball), or even the playing field in soccer

Echolocation

a biological sonar system where animals emit sounds and interpret the returning echoes to navigate, hunt, and identify objects, especially in darkness or murky water

• Volume

the amount of 3D space an object occupies or a container can hold

• Compression Wave

disturbances where particles in a medium (solid, liquid, or gas) oscillate back and forth parallel to the wave's direction of travel, creating alternating regions of high pressure (compressions) and low pressure (rarefactions)

• Wave speed 

how fast a wave travels, calculated by multiplying its wavelength (λ) by its frequency (f), or v = λf, measured in meters per second (m/s)

• Medium 

the intervening substance through which impressions are conveyed to the senses or a force acts on objects at a distance.

• Thunder

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a loud rumbling or crashing noise heard after a lightning flash due to the expansion of rapidly heated air.