Light Reflection and Vision

What is a common example of a natural light source?

• Firefly

• Sun

• Stars

• Moon

Explain how light reflects off a smooth surface.

• Light reflects off a smooth surface by changing color when it hits it.

• Light reflects off a smooth surface by creating a shadow on the surface.

• Light reflects off a smooth surface by absorbing all the light that hits it.

• Light reflects off a smooth surface by bouncing off at the same angle it hits the surface.

Provide an example of a transparent object.

• Plastic

• Wood

• Glass

• Air

What is the difference between translucent and opaque objects?

• Translucent objects are completely see-through, while opaque objects are partially see-through.

• Translucent objects allow some light to pass through, while opaque objects do not allow any light to pass through.

• Translucent objects allow all light to pass through, while opaque objects block some light.

• Translucent objects are always colored, while opaque objects are always transparent.

How do we see colors in the visible spectrum?

• Rods in our eyes detect different wavelengths of light in the visible spectrum.

• We hear colors through sound waves.

• Cones in our eyes detect different wavelengths of light in the visible spectrum.

• Our skin absorbs colors from the environment.

Name a type of artificial light source.

• Candle flame

• LED light

• Fluorescent tube

• Incandescent bulb

Describe the process of reflection when light hits a rough surface.

• Specular reflection occurs when light hits a rough surface and reflects at the same angle.

• Refraction occurs when light hits a rough surface and changes direction.

• Absorption occurs when light hits a rough surface and is completely absorbed.

• Diffuse reflection occurs when light hits a rough surface and scatters in many different directions.

Can you give an example of an opaque material?

• glass

• metal

• plastic

• wood

What happens when light passes through a translucent object?

• Light scatters in different directions due to the material's internal structure.

• Light passes through without any interaction

• Light creates a shadow

• Light changes color

Explain how the human eye perceives different colors.

• The human eye perceives colors through taste buds

• Colors are perceived by the human eye through the sense of smell

• Different colors are perceived by the human eye based on the weather

• The human eye perceives different colors through specialized cells called cones that are sensitive to different wavelengths of light.