Week 30 Extra Credit

How does light behave?

• Like a solid

• Only like a wave

• Like a wave and a particle

• Only like a particle

What are the properties of light when it behaves like a wave?

• It can be polarized and has mass

• It combines and interferes, reflects and refracts

• It has a specific amount of energy and can be counted

• It can be compressed and stretched

What is a characteristic of light when it behaves like a particle?

• It can be diffracted

• It has a variable amount of energy

• Each particle has a specific amount of energy

• It can be divided into smaller parts

What is the speed of electromagnetic (EM) waves in space?

• 3x10^6 m/s

• 3x10^8 m/s

• 2.99x10^8 m/s

• 1x10^8 m/s

Does the speed of EM waves depend on the medium?

• Yes, it always depends on the medium.

• No, it never depends on the medium.

• It depends on the medium only in space.

• It depends on the medium except in space.

What is visible light a part of?

• The invisible spectrum

• The audible spectrum

• The olfactory spectrum

• The spectrum we see

What determines the color of an object according to the image?

• The color it absorbs

• The frequency it reflects

• The frequency it emits

• The color it transmits

What does white color signify in terms of light reflection?

• No colors reflected

• Some colors reflected

• All colors absorbed

• All colors reflected

What does black color signify in terms of light absorption?

• No colors absorbed

• Some colors absorbed

• All colors reflected

• All colors absorbed

What happens when green light is shone on green paper?

• The paper reflects red light

• The paper absorbs all light

• The paper reflects green light

• No light is reflected