Waves Review - 2nd

Front

What is a mechanical wave?

Back

A mechanical wave is a type of wave that requires a medium (solid, liquid, or gas) to travel through.

Front

What type of electromagnetic wave has the highest frequency?

Back

Gamma rays emitted by radioactive materials have the highest frequency among electromagnetic waves.

Front

What is refraction in the context of waves?

Back

Refraction is the process by which light waves change direction as they pass from one medium to another.

Front

How does sound travel through different mediums?

Back

Sound travels faster through solids than through liquids or gases due to the closer proximity of particles in solids.

Front

What evidence can prove that sound travels faster in solids?

Back

Measuring the time required for sound to travel a set distance through a solid, a liquid, and a gas can provide evidence.

Front

What was the belief about light passing through black paper before 1896?

Back

Many believed that light could not pass through black paper.

Front

How did the experiment with uranium salts affect students' beliefs about light?

Back

The experiment showed that uranium salts could cause a reaction under black paper, leading students to revise their belief about light.

Front

What is the difference between mechanical and electromagnetic waves?

Back

Mechanical waves require a medium to travel, while electromagnetic waves do not require a medium and can travel through a vacuum.

Front

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

Back

Sound travels faster in water than in air due to the higher density and elasticity of water.

Front

What is the principle of wave reflection?

Back

Wave reflection occurs when a wave bounces back after hitting a barrier, following the law of reflection.