Light waves

Light waves

Open Ended

What are the six colors of visible light ?

Multiple Choice

The waves that make up light

• can travel through a vacuum, like mechanical waves of sound

• can travel through a vacuum, unlike mechanical waves of sound

• cannot travel through a vacuum, unlike mechanical waves of sound

Multiple Choice

We use the symbol c to

• represent the frequency of light.

• represent the wavelength of light.

• represent the speed of light.

Multiple Choice

The word celerity means

• Speed or swiftness

• Ability to travel in vacuum

Multiple Choice

A photon is a

• particle of light that carries energy that has mass

• particle of light that carries energy that has no mass

Multiple Choice

Quantum______

• is the smallest amount of energy that matter can absorb at a time.

• is the largest amount of energy that matter can absorb at a time.

The distance from the Sun to Earth is

1.50 X 10¹¹ m.

How long does it take for light to cover this distance?

 $speed\ of\ light=\ c=\frac{d}{t}\rightarrow\ t=\frac{d}{c}$  

Given:
c= 3x108
d= 1.5x1011
Unknown: t=?
 $Equation:t=\frac{d}{c}$  

 $t=\frac{1.5\times10^{11}}{3\times10^8}$  
Answer in next slide

Multiple Choice

The answer for the previous problem is _______

• 500 m/s

• 500 s

• 500 Hz