soundwaves

What is a wave?

A wave is energy moving from one place to another.

What is a medium in the context of waves?

A medium is the material a wave travels through.

Give an example of a medium for sound waves.

Air, water, and solids.

Do light waves need a medium to travel?

No, light waves do not require a medium.

What is a mechanical wave?

A wave that requires a medium to travel.

What is the key idea behind reflection of light?

Smooth surfaces reflect light clearly.

What happens during absorption of light?

A material takes in a wave's energy, often turning it into heat.

Which materials absorb most light?

Black clothing, dark surfaces, thick curtains.

What happens during transmission of light?

A wave passes through a material.

What is reflection in terms of light interaction?

When light bounces off a surface.

What does a mirror do to light?

A mirror reflects most light.

How does sound travel?

Sound travels as compression (longitudinal) waves.

What is the relationship between sound's pitch and frequency?

Higher frequency results in higher pitch, while lower frequency results in lower pitch.

What is refraction?

Light bends when it changes speed moving between materials.

What can thick curtains do in relation to sound?

Thick curtains absorb sound, making rooms quieter.

Why can't sound travel through space?

Sound cannot travel through space because there is no medium (air).

What is the key idea behind how black vs. white surfaces interact with light?

Black objects absorb most light and appear darker, while white objects reflect most light and appear brighter.