Electromagnetic Spectrum

How is light described in the theory of classical electromagnetism?

• As a longitudinal wave composed of sound and pressure fields

• As a particle that travels in a straight line

• As a transverse wave composed of oscillating electric and magnetic fields

• As a static field of energy

What are the three fundamental properties of electromagnetic waves?

• Pitch, volume, and tone

• Amplitude, wavelength, and frequency

• Speed, direction, and mass

• Color, brightness, and intensity

What characteristic of an electromagnetic wave determines the kind of light it is?

• Its amplitude

• Its speed

• Its frequency

• Its direction of travel

What is the approximate speed of all electromagnetic radiation in a vacuum?

• 300,000 meters per second

• 3,000,000 meters per second

• 30,000,000 meters per second

• 300,000,000 meters per second

What is the correct order of increasing energy?

• Microwaves, visible light, UV light, x-rays, gamma rays

• Microwaves, x-rays, gamma rays, visible light, UV light

• Microwaves, UV light, visible light, x-rays, gamma rays

• X-rays, gamma rays, microwaves, visible light, UV light

• UV light, visible light, microwaves, x-rays, gamma rays

If a photon’s wavelength is 663 nm, what is its energy?

• 40 x 10^-37 J

• 3.00 x 10^-22 J

• 4.40 x 10^-40 J

• 3.00 x 10^-19J

When a given molecule absorbs a photon of infrared (IR) radiation

• It begins to vibrate.

• It promotes electrons into delocalized bonding orbitals.

• It begins to rotate.

• Its electrons are excited to higher energy levels.

• It leads to hemolytic cleavage.

Radio-frequency radiation has what kind of impact on matter?

• It makes electrons spin

• It makes the molecule rotate

• It makes the nucleus split.

• It makes the nuclei spin.