Front

What are electromagnetic waves?

Back

Electromagnetic waves are waves that can travel through the vacuum of space and do not require a medium. They include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

What is the Doppler Effect?

Back

The Doppler Effect is the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source. It is commonly heard in sound waves, such as the change in pitch of a passing siren.

Front

What is amplitude in wave physics?

Back

Amplitude is the maximum displacement of points on a wave from its rest position. It is related to the energy of the wave; higher amplitude means more energy.

Front

What is wavelength?

Back

Wavelength is the distance between successive crests (or troughs) of a wave. It is usually measured in meters and is inversely related to frequency.

Front

How does sound travel in different mediums?

Back

Sound travels at different speeds in different mediums. It travels fastest in solids, slower in liquids, and slowest in gases due to differences in density and elasticity.

Front

What is wave frequency?

Back

Frequency is the number of waves that pass a given point in one second, measured in hertz (Hz). Higher frequency means more waves per second.

Front

What is reflection of waves?

Back

Reflection occurs when a wave bounces off a surface. For sound waves, this can result in echoes, as the sound waves reflect off surfaces and return to the listener.

Front

What is refraction of waves?

Back

Refraction is the bending of waves as they pass from one medium to another due to a change in speed. This can cause waves to change direction.

Front

What is the relationship between frequency and wavelength?

Back

Frequency and wavelength are inversely related; as the frequency of a wave increases, its wavelength decreases, and vice versa. This relationship is described by the equation: speed = frequency × wavelength.

Front

What is the speed of sound in air?

Back

The speed of sound in air at room temperature (20°C) is approximately 343 meters per second (m/s). This speed can vary with temperature and pressure.