Light Waves Post Assessment

What word is used to describe when light changes direction as it travels through a new medium?

• refraction

• diffraction

• Reflection

• distraction

Tags

NGSS.MS-PS4-2

What word is used to describe what light bounces off an object?

• diffraction

• refraction

• distraction

• reflection

Tags

NGSS.MS-PS4-2

If the angle of incidence is 40 degrees, what will the angle of reflection be?

• 35 degrees

• 20 degrees

• 40 degrees

• 80 degrees

Tags

NGSS.MS-PS4-2

What is the name given to the line 90 degree from the mirror or block?

• Normal line

• Northern line

• Necessary line

• Known line

Tags

NGSS.MS-PS4-2

An object that gives out light is...

• shiny

• luminous

• bright

• non-luminous

We don't see a reflection in paper because...

• light is scattered

• light is absorbed

• light disappears

• light isn't reflected

Tags

NGSS.MS-PS4-2

Why do we draw light rays with a ruler?

• It is clearer on diagrams

• It is neater

• Light travels in a straight line

• It is more accurate

Optical fibres work because of...

• dispersion

• refraction

• total internal refraction

• total internal reflection

Tags

NGSS.HS-PS4-5

How do we see non-luminous objects?

• Light from the object goes into our eye

• Light bounces off the object and into our eye

• Light that the object absorbed goes into our eye

• Light from our eye bounces off the object

Tags

NGSS.MS-PS4-1

Why does light bend when it enters a new medium?

• the light ray is absorbed

• the speed of the light changes

• the light ray bounces

Tags

NGSS.MS-PS4-2