Front

What is Refraction?

Back

Refraction is the bending of a wave as it passes from one medium to another, caused by a change in its speed.

Front

What happens to sound when the amplitude of a wave decreases?

Back

The sound gets lower.

Front

What is the difference between translucent, transparent, and opaque materials?

Back

Translucent materials allow some light to pass through but not enough to see clearly; transparent materials allow light to pass through clearly; opaque materials do not allow any light to pass through.

Front

What type of electromagnetic wave do humans emit as heat energy?

Back

Infrared light.

Front

Which electromagnetic wave has the longest wavelengths and lowest frequencies?

Back

Radio Waves.

Front

What is the amplitude of a wave?

Back

The amplitude is the maximum distance that the wave moves away from its rest position, related to the energy of the wave.

Front

What is the wavelength of a wave?

Back

The wavelength is the distance between two consecutive points that are in phase on a wave, such as crest to crest or trough to trough.

Front

What is the frequency of a wave?

Back

The frequency is the number of waves that pass a point in one second, measured in Hertz (Hz).

Front

What is reflection in terms of waves?

Back

Reflection is the bouncing back of a wave when it hits a barrier or a surface.

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).