The 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, X-rays, and more.

Front

How much of the electromagnetic spectrum is made up of visible light?

Back

Only a small portion.

Front

Which color of visible light has the highest energy?

Back

Violet.

Front

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

Back

As wavelength increases, energy decreases; shorter wavelengths have higher energy.

Front

What are the main types of electromagnetic waves?

Back

Radio waves, microwaves, infrared rays, visible light, ultraviolet rays, X-rays, and gamma rays.

Front

What is the speed of light in a vacuum?

Back

Approximately 299,792 kilometers per second (or about 300,000 kilometers per second).

Front

What is a source of light?

Back

A source of light is any object that emits light, such as the sun, a light bulb, or a fire.

Front

Can light pass through objects?

Back

Yes, light can pass through transparent objects.

Front

What is the difference between transparent, translucent, and opaque materials?

Back

Transparent materials allow light to pass through clearly, translucent materials allow some light to pass but scatter it, and opaque materials do not allow light to pass through.

Front

What is the visible spectrum?

Back

The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye, typically ranging from about 400 to 700 nanometers in wavelength.