PreTest: Introduction to Light Waves

In this diagram, which of the angles shown represents the angle of incidence? _____ represents the angle of incidence.

• Angle A

• Angle B

• Angle C

• Angle D

All electromagnetic waves travel at the same speed, through a vacuum. This accepted value for the speed of light (c) = ____.

• 299,792,458 m/sec

• 299,792 km/hr

The scientist who first determined a numerical value for the speed of light was the Danish astronomer, _____ _____.

• Oersted, Hans Christian

• Galilei, Galileo

• Faraday, Michael

• Romer, Ole

Light waves are produced by oscillating _____ that are perpendicular to one another.

• Particles

• Electric Field and Magnetic Field

• Photons

• Electric Fields

The _____ of an electromagnetic wave is the distinguishing characteristic of its unique behavior.

The part of the Electromagnetic Spectrum that the human eye is sensitive to(can detect), is called the _____ _____.

• Optimal Light

• Invisible Spectrum

• EM Spectrum

• Visible Spectrum

When solving a light wave problem, the appropriate equation to use is _____.

• Gamma Rays

• Microwaves

• Radio Waves

• X-Rays

The E-M Wave of visible light having the longest wavelength is _____ light.

_____, in general, is the direction of the electric field in a light wave.

• Polarization

• Doppler Shift

• Unpolarization

• Intensity