Light Behavior and Wave Properties

The video explores how light and sound waves behave, focusing on key behaviors such as reflection, transmission, absorption, refraction, diffraction, and scattering. Reflection involves waves bouncing off surfaces, while transmission occurs when waves pass through materials. Absorption and reflection determine the color of objects, and refraction causes changes in wave direction at material boundaries. Diffraction involves waves spreading through gaps, and scattering explains phenomena like the blue sky.

What are the two main types of waves discussed in the video?

• Transverse and Longitudinal

• Electromagnetic and Mechanical

• Primary and Secondary

• Sound and Light

Why do we hear echoes?

• Because sound waves are scattered in all directions

• Because sound waves are reflected by hard surfaces

• Because sound waves travel faster in air

• Because sound waves are absorbed by soft surfaces

How does a mirror create a reflection?

• By reflecting light in a regular way

• By refracting light

• By scattering light in all directions

• By absorbing all light

What happens to light when it passes through a window?

• It is absorbed

• It is reflected

• It is scattered

• It is transmitted

Why do black objects appear black?

• They reflect all light

• They absorb all light

• They transmit all light

• They scatter all light

What causes refraction?

• Scattering of waves in the atmosphere

• Change in wave speed due to different densities

• Reflection of waves off surfaces

• Absorption of waves by materials

Why does a straw appear bent in a glass of water?

• Because of diffraction

• Because of scattering

• Because of refraction

• Because of reflection

What is diffraction?

• Waves being absorbed by materials

• Waves spreading out after passing through a gap

• Waves changing direction at boundaries

• Waves bouncing off surfaces

How does scattering affect the appearance of the sky?

• It makes the sky appear yellow

• It makes the sky appear blue

• It makes the sky appear green

• It makes the sky appear red

What causes the blue color of the sky?

• Scattering of shorter blue wavelengths

• Absorption of red light

• Diffraction of light through clouds

• Reflection of sunlight