Waves Review - 1st

Front

What is the speed of sound in water compared to air?

Back

Sound travels faster in water than in air.

Front

What phenomenon occurs when light passes through a medium and changes direction?

Back

Refraction.

Front

What did the students learn about light passing through black paper after their experiment with uranium salts?

Back

They revised their belief that light could not pass through black paper because the experiment showed evidence to the contrary.

Front

What type of electromagnetic wave has the highest frequency?

Back

Gamma rays emitted by radioactive materials.

Front

Why does a penny appear closer to the surface of lemonade when viewed from above?

Back

The light waves are refracted as they enter the lemonade.

Front

What is the definition of ultrasonic waves?

Back

Ultrasonic waves are sound waves with frequencies above the audible range for humans, typically above 20 kHz.

Front

What is the relationship between frequency and wavelength in electromagnetic waves?

Back

Frequency and wavelength are inversely related; as frequency increases, wavelength decreases.

Front

What is the principle behind the refraction of light?

Back

Refraction occurs due to a change in the speed of light as it passes from one medium to another.

Front

How does the medium affect the speed of sound?

Back

The speed of sound varies depending on the medium; it travels fastest in solids, slower in liquids, and slowest in gases.

Front

What is the significance of gamma rays in the electromagnetic spectrum?

Back

Gamma rays have the highest energy and frequency, making them highly penetrating and used in medical treatments and imaging.