Question

Which statement about types of waves on the electromagnetic spectrum is true?

a. Ultraviolet waves have lower frequency, longer wavelength, and lower radiant energy than radio waves.

b. Infrared waves have lower frequency, longer wavelength, and lower energy than microwaves.

c. Radio waves have lower frequency, longer wavelengths, and lower energy than visible light.

d. Gamma rays have lower frequency, longer wavelength, and lower radiant energy than x-rays.

How does the speed of an electromagnetic wave vary in media of different densities?

a. In denser media, electromagnetic waves speed up.

b. In denser media, electromagnetic waves slow down.

c. Electromagentic waves travel at the same speed regardless of the density of the media.

d. In less dense media, electromagnetic waves will speed up and then slow down.

Which statement is true about the patterns shown on the electromagnetic spectrum?

a. As wavelength increases, radiant energy and frequency increase.

b. As frequency increases, energy and wavelength decrease.

c. As frequency decreases, radiant energy and wavelength increase.

d. As wavelength decreases, energy and frequency increase.

Answer 1

Radio waves have lower frequencies and energy than visible light; electromagnetic waves slow down in denser media; and as wavelength decreases, energy, and frequency of electromagnetic waves increase.

Step-by-step explanation:

The correct statements regarding types of waves on the electromagnetic spectrum and their behaviors in different media are:

• c. Radio waves have lower frequency, longer wavelengths, and lower energy than visible light.
• b. In denser media, electromagnetic waves slow down.
• d. As wavelength decreases, energy, and frequency increase.

The electromagnetic spectrum is characterized by a constant speed of light (c), with the relationship c = λν indicating that frequency (ν) is inversely proportional to wavelength (λ). This means as the frequency of electromagnetic waves increases, their wavelength decreases, and consequently, their energy increases. In media of different densities, the speed of electromagnetic waves varies; in denser media, the speed decreases.