Electromagnetic Spectrum Test

Which statement is TRUE about electromagnetic waves?

• Radio waves travel slower than gamma rays.
• Electromagnetic waves travel slower than sound waves.
• Electromagnetic waves speed up as they enter denser matter.
• All forms of electromagnetic energy travel the same speed - the speed of light.

From lowest frequency to highest frequency, what is the correct order of electromagnetic radiation?

• gamma, x-ray, ultraviolet, visible light, infrared, microwaves, radio
• radio, microwaves, infrared, visible light, ultraviolet, x-ray, gamma
• visible light, ultraviolet, x-ray, gamma, radio, microwaves, infrared
• radio, infrared, x-ray, visible light, microwaves, gamma, ultraviolet

Which part of the wave determines the color of a visible light wave?

• wavelength
• frequency
• amplitude
• wavelength and/or frequency

What is the correct order of the colors of light in the visible spectrum?

• BIVROYG
• ROYGBIV
• VIBGYOB
• YORBGVI

What kind of wave is light?

• Longitudinal
• Mechanical
• Transverse
• Potential

What happens when light travels through air, then through water?

• Light slows down.
• Light speeds up.
• Speed of light does not change.

What color has the longest wavelength?

• Red
• Yellow
• Blue
• Violet

What color has the greater frequency?

• Red
• Yellow
• Blue
• Violet

What color has the greater energy?

• Red
• Yellow
• Blue
• Violet

Objects appear black because all colors are

• reflected.
• emitted.
• transmitted.
• absorbed.