light Refraction

What is the cause of what you see in the image?

• light refraction

• light reflection

• light reconstroction

• light retraction

Why does the lower part of the child appear so much different in size from the upper part?

• The light rays that travel through water and then into air are refracted.
• The light rays that travel through water and then into air are enlarged.
• The light rays that travel through air and then into water are reflected.
• The light rays that travel through air and then into water are reduced.

Tags

NGSS.MS-PS4-2

The velocity of light in vacuum is _______ m/s

• 3x10⁸
• 3x10¹²
• 3x10⁶
• 3x10¹⁰

Tags

NGSS.HS-PS4-1

Swimming pools and the ocean look shallower than they really are due to:

• reflection 
• dispersion
• refraction
• total internal reflection

The formula to calculate the refractive index is

• n=cv
• n=v/c
• n=c/v
• v=nc

Light travels through a liquid at 2.25 X 10⁸ m/s. What is the index of the liquid? (speed of light in air 3 X 10⁸ m/s)

• 1.33

• 1.0

• 1.523

• 2.45

Light has the lowest velocity in which medium?

crown glass (n=1.523) or water (n=1.33) or diamond (n=2.45)

• diamond

• water

• flint glass

• barium glass

Glass has a _____________ index of refraction than air.

• Equal
• Greater
• Less
• Impossible to say

Based on the image, which medium has a larger index of refraction?

• Medium 1 has a larger index of refraction.

• Medium 2 has a larger index of refraction.

• Both mediums have the same index of refraction.

• Cannot be determined.

Tags

NGSS.MS-PS4-2

Based on the image, as light passes from medium 1 to medium 2

• light speeds up and bends towards the normal

• light speeds up and bends away from the normal

• light slows down and bends towards the normal

• light slows down and bends away from the normal

Tags

NGSS.MS-PS4-2