PHYSICS - Waves - Wave Behaviour

The video explores how light and sound waves behave, covering key concepts like reflection, transmission, absorption, refraction, diffraction, and scattering. It explains how waves interact with different materials, affecting phenomena like echoes, color perception, and visual distortions in water. The video also highlights practical examples, such as how sound absorption can reduce noise and how scattering makes the sky appear blue.

What happens to sound waves when they hit a hard, flat surface?

• They change color.

• They are reflected, creating echoes.

• They are absorbed completely.

• They are transmitted through the surface.

How does the color of an object relate to the wavelengths of light it reflects?

• It reflects the wavelengths that correspond to its color.

• It reflects no wavelengths at all.

• It reflects only the wavelengths it absorbs.

• It reflects all wavelengths equally.

What causes waves to change direction when they pass from air to glass?

• The shape of the glass.

• The temperature of the air.

• The density difference between air and glass.

• The color of the glass.

What is the phenomenon called when waves spread out after passing through a gap?

• Absorption

• Diffraction

• Refraction

• Reflection

Why does the sky appear blue?

• Because of the reflection of the ocean.

• Due to the scattering of shorter blue wavelengths of light.

• Because the sun emits blue light.

• Due to the absorption of red light.