Light & the EM Spectrum

A lightyear is:

• How much light the Sun gives off in one year.

• A year in which very little happens.

• The time it take light to travel the distance from the Sun to the Earth.

• The distance light travels in one year.

The speed of light is:

• 300,000,000 m/sec

• 340 m/s

• 300 m/s

• 3,000,000 m/s

Which electromagnetic wave has the highest ENERGY?

• Visible

• Microwaves

• X Rays

• Gamma Rays

What is the ultimate source of electromagnetic waves?

• T.V. Antennas

• E.T. (Extra-Terrestrials)

• Vibrating Charged Particles

• Radios

Different colors of light correspond to different light:

• Wavelengths

• Intensities

• Amplitudes

• Velocities

Which of the following describes the behavior of light?

• Particle

• Wave

• Both Particle and Wave

• Neither Particle nor Wave

Gamma rays have a __________ wavelength and a ___________ frequency than radio waves.

• longer, lower

• shorter, higher

• shorter, lower

• longer, higher

What color of light has the highest frequency?

• Red

• Blue

• Violet

• Yellow

For light waves, the _________ the amplitude, the __________ the light.

• higher, dimmer

• higher, brighter

• lower, brighter

• lower, louder

What do we call the frequencies of light in the Electromagnetic Spectrum that we are able to see with our eyes?

• Ultraviolet Rays

• Infrared Rays

• Microwaves

• Visible Light