Light and Sound Review

The photoelectric effect is when

• electrons cause photons to move faster.

• electrons cause photons to become "excited."

• light waves are reflected off of a piece of metal.

• photons cause electrons to be ejected from a metal.

Which of the following has the lowest energy in the electromagnetic spectrum?

• gamma ray

• visible light

• radio waves

• ultraviolet light

Which of the following has the highest frequency in the electromagnetic spectrum?

• gamma ray

• visible light

• radio waves

• ultraviolet light

What type of electromagnetic radiation has the longest wavelength?

• gamma waves

• microwaves

• radio waves

• ultra violet

• x-rays

What color of light carries the most energy?

• red

• green

• blue

• violet

• yellow

What color of light has the lowest frequency?

• red

• green

• blue

• violet

• yellow

What color of light has the shortest wavelength?

• red

• green

• blue

• violet

• yellow

Our eyes see color when light is ________.

• reflected back

• refracted back

• absorbed by the object

Which of the following uses infrasound waves?

• elephants

• bats

• dolphins

• sonograms

Pitch is directly proportional to ________________.

• the wavelength of light

• the frequency of light

• the wavelength of sound

• the frequency of sound