Physical Science (Quiz)

Wave

A disturbance that transfers energy through a medium or space.

Medium

The substance or material through which a wave travels; can be solid, liquid, or gas.

Mechanical Wave

A wave that requires a medium to travel, such as sound waves and water waves.

Electromagnetic Wave

A wave that does not require a medium to travel; examples include light waves and radio waves.

Transverse Waves

Waves in which the particles of the medium vibrate perpendicular to the direction the wave is traveling.

Crest

The highest point of a transverse wave.

Trough

The lowest point of a transverse wave.

Amplitude

The maximum displacement of particles from their equilibrium position, representing the intensity of the wave.

Compressional Longitudinal Waves

Waves in which the particles of the medium vibrate in the same direction that the wave is moving; examples include sound waves.

Compressions

Regions of a compressional wave where particles are close together.

Rarefactions

Regions of a compressional wave where particles are spread apart.

Wave Velocity Equation

The equation relating speed of a wave (v), frequency (f), and wavelength (λ); given by v = f * λ.

Frequency

The number of complete wave cycles that pass a given point in one second, measured in Hertz (Hz).

Wavelength

The distance between two consecutive points in a wave that are in phase, represented by λ (lambda).

Sound

Compressional waves in air or another medium that can be detected with our ears.

Pitch

How 'high' or 'low' a sound is, determined by the frequency of the soundwaves.

Volume

How loud or quiet a sound is, determined by the amplitude of the soundwaves.

Doppler Effect

The apparent change in frequency of sound due to the relative velocity of the source and receiver.

Sound Barrier

An object is said to have broken the sound barrier if it is traveling faster than the speed of sound.

Sonic Boom

A loud sound generated when an object breaks the sound barrier.

Speed of Sound in Air

Depends on altitude and other factors.

Speed of Sound

The speed at which sound travels through a medium, varying with altitude and other factors.

Factors Affecting Sound Speed

The speed of sound in air depends on altitude and the medium through which it travels.

Sound Waves

Waves that propagate through a medium (solid, liquid, or gas) as compressional waves.

Wave Cycle

A complete wave pattern, consisting of one crest and one trough.

Hertz (Hz)

The unit of measurement for frequency; equivalent to 1 cycle per second.

Phase of a Wave

Refers to the position of a point in time on a waveform, measured in degrees or radians.

Wave Energy

The energy transferred by waves as they propagate through a medium.

Sound Intensity

A measure of the power per unit area carried by a sound wave, related