Light lesson 1

In the given figure, which of the following holds TRUE?

• The angle of incidence is 10°.

• The angle of incidence is 80°.

• The angle of reflection is 10°.

• The angle of reflection is 90°.

Tags

NGSS.MS-PS4-2

What happens to light during total internal reflection?

• The angle of incidence is greater than the critical angle.

• The angle of reflection is the same as the critical angle.

• The angle of refraction is less than the critical angle.

• The angle of incidence is zero.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

NGSS.HS-PS4-5

Fiber optic cables work because of the principle of _____.

• total internal refraction

• incomplete internal refraction

• total internal reflection

• partial internal reflection

Chose the TWO conditions are NOT correct for total internal reflection to take place

• The incident angle should be less than the critical angle

• The incident angle should be greater than the critical angle

• Light should travel from a denser to a lighter medium

• Light should travel from a lighter to a denser medium

The change in the speed of light causes the light to BEND which is the same as a ___________.

• reflection

• refraction

• absorption

When you look at yourself in the mirror, you see your ____.

• refraction

• absorption

• reflection

When light strikes a transparent material, most of the light is reflected.

• True

• False

Light travels fastest in ________________

• Solids

• Liquids

• Gases

• A vacuum

Light travels faster in water than in air

• False

• True

What causes the refraction of a wave?

• the density of the medium can change the speed

• the amount of the medium changes the direction

Tags

NGSS.MS-PS4-2