Review-Light and Sound

Front

What is the medium through which sound waves cannot travel?

Back

Space

Front

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

Back

Wavelength (λ) = Speed of Light (c) / Frequency (f)

Front

What is the wavelength of an infrared wave with a frequency of 4.2 x 10^14 Hz?

Back

7.1 x 10^-7 m

Front

What phenomenon occurs when waves spread out after passing through a slit?

Back

Diffraction

Front

What is the observed frequency when both the source and observer are moving towards each other?

Back

It increases due to the Doppler effect.

Front

What is the function of heavy curtains in theaters regarding sound?

Back

They absorb sound to reduce echoes.

Front

What is the term for the bending of light as it passes from one medium to another?

Back

Refraction

Front

What is the speed of sound in air at room temperature?

Back

Approximately 343 m/s.

Front

What is the principle that explains why we hear a sound after a delay during a thunderstorm?

Back

The difference in the speed of light and sound.

Front

What is the term for the bouncing back of sound waves when they hit a surface?

Back

Reflection