Why do you not see an image when light reflects off a rough surface?

• because not enough light is not reflected

• because the reflection is specular

• because the reflection is diffuse

• because the law of reflection does not apply

A ray of white light passes through a prism.  On the other side of the prism, you see a rainbow.  What is this phenomenon called?

• Reflection
• Refraction
• Medium
• Dispersion

The Law of Reflection:

The angle of incidence is _________ the angle of reflection

• bigger than

• the same as

• smaller than

• 

Tags

NGSS.MS-PS4-2

When light passes at an angle to the normal from one material into another material in which its speed is lower

• it is bent towards the normal.
• it always lies along the normal.
• it is unaffected.
• it is bent away from the normal.

Tags

NGSS.MS-PS4-2

As you look into a flat mirror, where is your image going to form?

• A

• B

• C

• D

Tags

NGSS.MS-PS4-2

A beam of light traveling through air hits the surface of a lake. Which of the arrows correctly show what happens to the light beam in water?

• A

• B

• C

• D

Tags

NGSS.MS-PS4-2

What happens to the image when you move the candle further away from the lens?

• Get smaller and moves toward the lens

• Get bigger and moves toward the lens

• Get smaller and moves away from the lens

• Get bigger and moves away from the lens

• No image will appear

What happens to the image when you move the candle to the focal point F₁?

• Get smaller and moves toward the lens

• Get bigger and moves toward the lens

• Get smaller and moves away from the lens

• Get bigger and moves away from the lens

• No image will appear

Light travels at the speed of light, and sound travels at the speed of sound. Both depend on the medium through which they travel. The difference is that in denser media, _______________ slows down but _______________ moves faster.

• light; sound

• sound; light

• Trick question! There is no difference. Neither speed changes, ever!

• Lies! They both slow down in denser media

Tags

NGSS.HS-PS4-1

T/F: When light rays move from one medium into another, their speed and wavelength changes but the frequency stays the same

• True

• False

Tags

NGSS.HS-PS4-1