Electromagnetic Spectrum

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, which includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

What type of electromagnetic wave is emitted by quasars with a frequency of 1.41 × 10^9 Hz?

Back

Microwaves.

Front

Which electromagnetic wave has the lowest energy?

Back

Microwave.

Front

What is the relationship between wavelength and frequency?

Back

A wave with a large wavelength will have a low frequency and low energy.

Front

What happens to the wavelength of high frequency waves?

Back

High frequency waves have short wavelengths.

Front

How does the energy of an electromagnetic wave change with frequency?

Back

As the frequency of an electromagnetic wave increases, the amount of energy in that wave increases.

Front

What are radio waves?

Back

Radio waves are a type of electromagnetic radiation with the longest wavelengths and lowest frequencies.

Front

What is visible light?

Back

Visible light is the portion of the electromagnetic spectrum that is visible to the human eye, typically ranging from wavelengths of about 400 to 700 nanometers.

Front

What are gamma rays?

Back

Gamma rays are high-energy electromagnetic waves with very short wavelengths, often produced by radioactive atoms and in nuclear explosions.

Front

What is the speed of electromagnetic waves in a vacuum?

Back

The speed of electromagnetic waves in a vacuum is approximately 299,792 kilometers per second (or about 300,000 km/s).