The Nature of Waves: Interaction of Waves

The video tutorial explains how light and sound waves interact with matter through reflection and refraction. Reflection is when waves bounce back after hitting a surface, as seen in mirrors or heard as echoes. Refraction occurs when waves change direction as they pass from one medium to another, like light bending in water. These concepts illustrate the fundamental ways waves interact with their environment.

What happens to light when it strikes a surface like a mirror?

• It disappears.

• It gets absorbed.

• It changes color.

• It bounces back.

What is the term for hearing a sound repeatedly after it is made?

• Feedback

• Distortion

• Echo

• Reverb

How do waves typically travel?

• In zigzags

• In circles

• In straight lines

• In spirals

What is the term for the bending of a wave as it moves from one medium to another?

• Absorption

• Reflection

• Diffraction

• Refraction

Why does a pencil appear bent when placed in a glass of water?

• Because of diffraction

• Because of absorption

• Because of refraction

• Because of reflection