Waves Review - 5th

Front

What is wavelength in the context of waves?

Back

Wavelength is the distance between successive crests (or troughs) of a wave, typically measured in meters.

Front

Which type of electromagnetic wave has the highest frequency?

Back

Gamma rays emitted by radioactive materials have the highest frequency in the electromagnetic spectrum.

Front

Why does an apple appear red?

Back

An apple appears red because it reflects red light and absorbs all other visible wavelengths.

Front

What type of waves are responsible for sunburn?

Back

Ultraviolet (UV) waves are responsible for causing sunburn.

Front

How does the speed of sound differ in water and air?

Back

Sound travels faster in water than in air due to the higher density and elasticity of water.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

What is the relationship between frequency and wavelength in waves?

Back

Frequency and wavelength are inversely related; as the frequency increases, the wavelength decreases, and vice versa.

Front

What are ultrasonic waves?

Back

Ultrasonic waves are sound waves with frequencies above the audible range for humans, typically above 20 kHz.

Front

What is the principle of reflection in waves?

Back

The principle of reflection states that when a wave encounters a barrier, it bounces back into the original medium.

Front

What is the difference between mechanical and electromagnetic waves?

Back

Mechanical waves require a medium to travel through (like sound waves), while electromagnetic waves do not require a medium and can travel through a vacuum (like light waves).