Matter and Energy Flashcard 13

Front

What is the SI unit of frequency?

Back

Hertz (Hz) is the SI unit of frequency.

Front

What is refraction?

Back

Refraction is the bending of the path of a wave as a result of a change in wave speed.

Front

What formula is used to find the period of a wave?

Back

The formula to find the period of a wave is T = t/N.

Front

How do you calculate the speed of a wave?

Back

The speed of a wave can be calculated using the formula: speed = wavelength × frequency.

Front

What is a medium in the context of wave energy transfer?

Back

A medium is the substance through which a wave transfers its energy.

Front

What is the relationship between frequency and period?

Back

Frequency (f) is the reciprocal of the period (T): f = 1/T.

Front

What happens to the speed of a wave when it enters a denser medium?

Back

The speed of a wave decreases when it enters a denser medium.

Front

What is the formula for calculating wave speed?

Back

Wave speed (v) = wavelength (λ) × frequency (f).

Front

What is the difference between reflection and refraction?

Back

Reflection is the bouncing back of a wave when it hits a barrier, while refraction is the bending of a wave as it passes from one medium to another.

Front

What is the definition of wavelength?

Back

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