Review for EMS and Light Waves Test

Which parts of the body allow us to see?

• nerve fibers, brain, vocal cords
• eyes, nerve fibers, and brain
• brain, eyes, spinal cord
• sinuses, optic nerve, and vitreous humor

Which of the following is a type of energy from the sun that reaches the earth?

• visible light
• infrared light
• ultraviolet light
• all of the above

Sunlight shines on the hood of a car which causes it to gain heat energy. Which of the following factors will affect how hot the car gets? Click ALL that apply.

• how long the sun shines on it
• the intensity of the sun
• the shape of the sun
• the amount of light the car absorbs

Which of these colors of visible light has the shortest wave length?

• red
• yellow
• green
• violet

Visible light is what type of wave?

• electromagnetic
• longitudinal
• mechanical
• seismic

Which part of the electromagnetic spectrum can humans see without using equipment or technology?

• radio waves
• microwaves
• visible light
• x-rays

Light waves are arranged in the electromagnetic spectrum by

• wavelength and brightness
• wavelength and frequency
• brightness and color
• speed and color

What type of radiation in the electromagnetic spectrum is associated with observable colors such as red, green, and blue?

• gamma rays
• visible light
• x-rays
• radio waves

What color is produced when all the colors of visible light are combined?

• black
• grey
• brown
• white

Which statement BEST describes the relationship between visible light and the electromagnetic spectrum?

• visible light and the electromagnetic spectrum are different names for the same thing
• visible light occupies about half of the electromagnetic spectrum
• visible light is a narrow band in the electromagnetic spectrum
• visible light and the electromagnetic spectrum have a small area of overlap