Sound, Light, Waves

Front

What is the term for an object that does not allow light to pass through it?

Back

Opaque.

Front

What is the formula to calculate the wavelength of a wave?

Back

v = f * λ (where v is velocity, f is frequency, and λ is wavelength).

Front

If a wave has a velocity of 45 m/s and a frequency of 20 Hz, what is its wavelength?

Back

2.25 m.

Front

What do we call a surface that reflects light?

Back

Mirror.

Front

What is the unit used to measure sound intensity?

Back

Decibels.

Front

What is the term for materials that allow some light to pass through but not clearly?

Back

Translucent.

Front

What is the difference between transparent and opaque materials?

Back

Transparent materials allow light to pass through clearly, while opaque materials do not allow any light to pass through.

Front

What happens to a wave when it hits a barrier and bounces back?

Back

It is reflected.

Front

What is the frequency of a wave if its velocity is 60 m/s and its wavelength is 3 m?

Back

20 Hz.

Front

What is the term for the distance between two consecutive crests of a wave?

Back

Wavelength.