electromagnetic spectrum

Front

What is the electromagnetic spectrum?

Back

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

Front

What is the relationship between wavelength and frequency?

Back

As the wavelength of electromagnetic waves decreases, the frequency increases. This is described by the equation: speed = wavelength × frequency.

Front

Which color of visible light has the longest wavelength?

Back

Red light has the longest wavelength in the visible spectrum.

Front

Which type of electromagnetic wave has the highest frequency?

Back

Gamma rays have the highest frequency in the electromagnetic spectrum.

Front

What is the speed of light in a vacuum?

Back

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

Front

What are radio waves used for?

Back

Radio waves are used for communication, including radio and television broadcasting, as well as for mobile phones and wireless networks.

Front

What is the difference between infrared and ultraviolet radiation?

Back

Infrared radiation has longer wavelengths than visible light and is primarily associated with heat, while ultraviolet radiation has shorter wavelengths and can cause sunburn.

Front

What is the principle of wave-particle duality?

Back

Wave-particle duality is the concept that electromagnetic radiation exhibits both wave-like and particle-like properties.

Front

What do electromagnetic waves NOT need to transfer energy?

Back

Electromagnetic waves do not need matter to transfer energy; they can travel through a vacuum.

Front

How do sound waves differ from electromagnetic waves?

Back

Sound waves require a medium (solid, liquid, or gas) to travel through, while electromagnetic waves can travel through a vacuum.