The video explores how light and sound waves behave, covering key concepts such as reflection, transmission, absorption, refraction, diffraction, and scattering. Reflection involves waves bouncing off surfaces, while transmission sees them passing through objects. Absorption and reflection determine an object's color, and refraction changes wave direction at boundaries. Diffraction occurs when waves pass through gaps, and scattering explains phenomena like the blue sky.

What are the two main types of waves?

• Reflective and Refractive

• Transverse and Longitudinal

• Absorptive and Transmissive

• Diffusive and Scattering

What causes echoes?

• Refraction of sound waves

• Reflection of sound waves

• Diffraction of sound waves

• Transmission of sound waves

What happens when light waves pass through a smooth surface like glass?

• They get scattered

• They get reflected in a regular way

• They change direction

• They get absorbed

How does light pass through a window?

• By diffraction

• By absorption

• By reflection

• By transmission

What determines the color of an object as perceived by humans?

• The color it reflects

• The color it transmits

• The color it diffracts

• The color it absorbs

Tags

NGSS.HS-PS4-4

How can sound absorption be increased in a room?

• By removing all furniture

• By adding carpets and curtains

• By using hard, flat surfaces

• By adding more windows

What phenomenon makes objects underwater appear closer than they are?

• Diffraction

• Scattering

• Reflection

• Refraction

What is the effect of wave diffraction?

• It causes waves to scatter in multiple directions

• It makes waves change speed

• It makes waves spread out after passing through a gap

• It causes waves to change direction

What is the role of diffraction in loudspeakers?

• It allows sound to spread out

• It amplifies the sound

• It reduces the sound quality

• It helps in sound transmission

Why does the sky appear blue?

• Because of the reflection of water

• Because of the refraction of light in the atmosphere

• Because of the absorption of blue light by the atmosphere

• Because of the scattering of shorter blue wavelengths