8.4 Refraction

A student placed a pencil in a cup of water. The pencil appears broken because light

• always travels in a straight line.

• bends when it passes through water.

• makes the water in the glass evaporate.

• reflects the pencil on the water's surface.

Tags

NGSS.MS-PS4-2

The speed of light in vacuum is _______ m/s

• 3x10⁸

• 3x10¹²

• 3x10⁶

• 3x10¹⁰

We can see objects because of_______

• reflection
• refraction
• transmission
• diffraction

Tags

NGSS.MS-PS4-2

When does light get refracted?

• When light travels in a straight line

• When light is bounced

• When light travels in two different mediums

• When light cannot pass through an opaque object

Light bends towards the normal when it travels from glass to air.

• True

• False

Light passes into a glass block. Which is the angle of refraction?

• A

• B

• C

• D

Tags

NGSS.MS-PS4-2

According to this picture, how is the light ray bent?

• Away from the normal

• Towards the normal

The diagram below shows a ray of monochromatic light incident on a boundary between air and glass. Which of the letters represent the path after it strikes the glass?

• A

• B

• C

• D

Tags

NGSS.MS-PS4-2

A light ray enters a glass block from air as shown in the diagram. The light ray will...

• bend towards the normal

• bend away from the normal

• travel in the same direction

A light ray enters water from a glass as shown in the diagram. The light ray will.....

(Water is optically less dense than glass.)

• bend towards the normal

• bend away from the normal

• travel in the same direction