S8P4 - Waves Review

Front

What is diffraction?

Back

Diffraction is the bending of waves around obstacles and openings, allowing sound or light to spread out and be heard or seen even when the source is not directly in line with the observer.

Front

What is the difference between concave and convex lenses?

Back

Concave lenses diverge light rays, causing them to spread apart, while convex lenses converge light rays, bringing them together to a point.

Front

What do waves carry or transmit?

Back

Waves carry or transmit energy from one place to another.

Front

What is reflection in the context of waves?

Back

Reflection is the bouncing back of waves when they hit a barrier, such as sound waves echoing in a canyon or light waves bouncing off a mirror.

Front

What is refraction?

Back

Refraction is the bending of waves as they pass from one medium to another, changing speed and direction, such as light bending when entering water.

Front

What is the principle of superposition?

Back

The principle of superposition states that when two or more waves overlap, the resulting wave is the sum of the individual waves.

Front

What is the wavelength of a wave?

Back

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

Front

What is frequency in relation to waves?

Back

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

Front

What is amplitude?

Back

Amplitude is the maximum displacement of points on a wave from its rest position, related to the energy of the wave.

Front

What is the speed of a wave?

Back

The speed of a wave is determined by the medium through which it travels and is calculated by the formula: speed = wavelength × frequency.