Year 8 Science Reflection and Refraction

What is reflection of light?

• Bending of light waves

• Absorption of light waves

• Changing direction of light waves

• Bouncing back of light waves from a surface

Tags

NGSS.MS-PS4-2

When light travels from air into glass, in which direction does it bend?

• Towards the normal

• Away from the normal

• Perpendicular to the normal

• It does not bend

Tags

NGSS.MS-PS4-2

What is refraction of light?

• Bending of light waves as they pass through a medium

• Absorption of light waves by a medium

• Changing direction of light waves without any change in speed

• Reflection of light waves from a surface

Tags

NGSS.MS-PS4-2

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

• It increases

• It decreases

• It remains the same

• It becomes zero

Tags

NGSS.MS-PS4-2

What happens when white light passes through a prism?

• It reflects off the prism

• It absorbs into the prism

• It disperses into its constituent colours

• It forms a single colour

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

If a ray of light strikes a mirror at an angle of 30 degrees with respect to the normal, what is the angle of reflection?

• 30 degrees

• 60 degrees

• 90 degrees

• Cannot be determined

Tags

NGSS.MS-PS4-2

What happens when two primary colours of light are mixed together?

• They create a secondary colour

• They cancel each other out

• They remain separate

• They become white light

Which colour of light deviates the least when passing through a prism?

• Red

• Green

• Blue

• Violet

According to the law of reflection, what is the relationship between the incident angle and the reflected angle?

• They are always equal

• They are always greater than 90 degrees

• They are always less than 90 degrees

• They are always parallel to each other

Tags

NGSS.MS-PS4-2

Which of the following best describes how an object appears yellow?

• It reflects yellow light and absorbs other colours

• It absorbs yellow light and reflects other colours

• It emits yellow light

• It does not interact with light

Tags

NGSS.4-PS4-2