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 is the frequency of infrared waves?

Back

The frequency of infrared waves is approximately 10^12 Hz.

Front

What type of telescope is used to detect microwaves?

Back

A telescope that detects microwaves is used to observe celestial bodies emitting waves with frequencies around 1.41 x 10^9 Hz.

Front

What is the correct order of the visible light spectrum starting with the longer wavelength?

Back

The correct order is Red, Orange, Yellow, Green, Blue, Indigo, Violet.

Front

What type of telescope is needed to view X-rays?

Back

An X-ray telescope is needed to view celestial objects emitting wavelengths around 3 x 10^-10 m.

Front

What are radio waves?

Back

Radio waves are a type of electromagnetic radiation with wavelengths longer than infrared light, used in communication technologies.

Front

What is the wavelength range of visible light?

Back

The wavelength range of visible light is approximately 400 nm to 700 nm.

Front

What is the relationship between frequency and wavelength in the electromagnetic spectrum?

Back

Frequency and wavelength are inversely related; as frequency increases, wavelength decreases.

Front

What are gamma rays?

Back

Gamma rays are high-frequency electromagnetic waves with very short wavelengths, often emitted by radioactive materials.

Front

What is the significance of quasars in astronomy?

Back

Quasars are extremely distant celestial objects that emit large amounts of energy, helping astronomers understand the early universe.