Light Review

What does it mean for an object to be opaque?

• An object allows all light to pass through it.

• An object allows some light to pass through it.

• An object does not allow any light to pass through it.

• An object reflects all light that hits it.

What is reflection?

• Reflection is the bending of light as it passes through a medium.

• Reflection is the bouncing back of light when it hits a surface.

• Reflection is the absorption of light by a surface.

• Reflection is the scattering of light in different directions.

What colors does white light contain?

• Only red and blue colors.

• All colors of the visible spectrum.

• Only green and yellow colors.

• Only primary colors.

What does it mean for an object to be transparent?

• An object is transparent if it allows light to pass through it without scattering.

• An object is transparent if it reflects all light that hits it.

• An object is transparent if it absorbs all light that hits it.

• An object is transparent if it allows some light to pass through but scatters it.

How do we see colors?

• We see colors because different objects absorb certain wavelengths of light and reflect others.

• We see colors because our eyes produce light that illuminates objects.

• We see colors because of the temperature of the objects we observe.

• We see colors because of the way our brain interprets sound waves.

What is wavelength?

• The distance between two consecutive peaks (or troughs) of a wave.

• The speed at which a wave travels through a medium.

• The amplitude of a wave measured from its rest position.

• The frequency of a wave measured in hertz.

What is the role of sunlight in forming a rainbow?

• Sunlight provides the light that is refracted and reflected in water droplets to create a rainbow.

• Sunlight heats the air, causing it to rise and form clouds that create rainbows.

• Sunlight is absorbed by water droplets, which then emit light in a spectrum of colors.

• Sunlight interacts with the Earth's magnetic field to produce a rainbow.

What happens to light when it hits a mirror?

• It passes through the mirror and continues in a straight line.

• It absorbs the light and changes color.

• It reflects back, allowing us to see our image.

• It scatters in all directions.

What is the importance of light in our daily lives?

• Light is essential for vision and photosynthesis in plants.

• Light is only important for aesthetic purposes.

• Light has no significant impact on technology.

• Light is essential for vision, photosynthesis in plants, and it plays a crucial role in various technologies.

What is the difference between reflection and refraction?

• Reflection is the bending of light, while refraction is the bouncing back of light.

• Reflection is the bending of light as it passes through different materials, while refraction is the bouncing back of light.

• Reflection is the bouncing back of light, while refraction is the bending of light as it passes through different materials.

• Reflection and refraction are the same phenomenon.