Reflection and Refraction of Light

What is reflection of light?

• Reflection of light is the emission of light from a source

• Reflection of light is the process where light bounces off a surface at the same angle it hits it.

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

• Reflection of light is the absorption of light by a surface

Explain the law of reflection.

• The law of reflection states that the angle of reflection is perpendicular to the angle of incidence

• The law of reflection states that the angle of incidence is greater than the angle of reflection

• The law of reflection states that light bends at an angle

• The law of reflection states that the angle of incidence is equal to the angle of reflection.

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NGSS.4-PS4-2

Give an example of reflection of light in everyday life.

• Seeing your reflection in a pond

• Seeing your reflection in a painting

• Seeing your reflection in a mirror

• Seeing your reflection in a shadow

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NGSS.MS-PS4-2

Define refraction of light.

• Refraction of light is the absorption of light by a medium.

• Refraction of light is the change in direction of light as it passes from one medium to another due to the change in its speed.

• Refraction of light is the emission of light from a source.

• Refraction of light is the reflection of light off a surface.

What causes refraction of light?

• Change in speed and direction of light due to change in medium's optical density

• Deflection of light due to magnetic fields

• Absorption of light by the medium

• Reflection of light

How does the speed of light change when it enters a denser medium?

• The speed of light increases

• The speed of light remains constant

• The speed of light becomes negative

• The speed of light decreases

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NGSS.MS-PS4-2

Explain the concept of total internal reflection.

• Total internal reflection is the phenomenon where a light ray traveling from a denser medium to a less dense medium strikes the boundary at an angle greater than the critical angle, causing the light to reflect back into the denser medium rather than refracting.

• Total internal reflection only happens when light strikes the boundary at an angle less than the critical angle.

• Total internal reflection is the result of light bending as it passes through a medium.

• Total internal reflection occurs when light passes from a less dense medium to a denser medium.

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NGSS.4-PS4-2

What is the critical angle in the context of refraction?

• The critical angle is the angle of refraction that results in total internal reflection

• The critical angle in the context of refraction is the angle of incidence that results in an angle of refraction of 90 degrees.

• The critical angle is always less than the angle of incidence

• The critical angle is the angle at which light passes through a medium without any refraction

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NGSS.MS-PS4-2

Describe how a prism can separate white light into its component colors.

• The separation of white light by a prism is caused by the light passing through different mediums

• White light is separated by a prism due to magnetic properties of the colors

• A prism can separate white light into its component colors by refracting the light at different angles based on the wavelength of each color, causing dispersion.

• A prism can separate white light by absorbing certain colors and reflecting others

What is the difference between reflection and refraction of light?

• Reflection is the scattering of light, while refraction is the focusing of light.

• Reflection is the absorption of light, while refraction is the emission of light.

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

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