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 waves are used in broadcasting?

Back

Radio waves are used in broadcasting.

Front

Which color of visible light has the lowest frequency?

Back

Red has the lowest frequency among visible light colors.

Front

What is the order of colors in a rainbow?

Back

The order of colors in a rainbow is ROYGBIV (Red, Orange, Yellow, Green, Blue, Indigo, Violet).

Front

What is the correct order of waves on the electromagnetic spectrum from longest wavelength to shortest?

Back

The correct order is Radio, Micro, Infrared, Visible, Ultraviolet, X-ray, Gamma.

Front

Which color has the highest frequency (shortest wavelength)?

Back

Violet has the highest frequency among visible light colors.

Front

What are infrared rays used for?

Back

Infrared rays are used in remote controls, thermal imaging, and night vision.

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 is the relationship between wavelength and frequency?

Back

Wavelength and frequency are inversely related; as the wavelength increases, the frequency decreases, and vice versa.

Front

What is visible light?

Back

Visible light is the portion of the electromagnetic spectrum that can be seen by the human eye, typically ranging from about 400 to 700 nanometers in wavelength.