Seeing Color

Front

What is the visible spectrum?

Back

The visible spectrum is the portion of the electromagnetic spectrum that can be seen by the human eye, typically ranging from wavelengths of about 380 nm (violet) to 750 nm (red).

Front

How do humans see different wavelengths?

Back

Humans see different wavelengths as different colors.

Front

What happens to wavelengths as you move from left to right on the electromagnetic spectrum?

Back

The wavelengths decrease in size (get smaller).

Front

List the visible light colors in order from longest wavelength to shortest wavelength.

Back

Red, Orange, Yellow, Green, Blue, Indigo, Violet.

Front

What are electromagnetic waves?

Back

Electromagnetic waves are waves that can travel through a vacuum and transmit energy instead of matter.

Front

How do electromagnetic waves differ from mechanical waves?

Back

Electromagnetic waves can travel through a vacuum, while mechanical waves require a medium (like air or water) to travel.

Front

What color does an object appear if it reflects all wavelengths of visible light?

Back

The object appears white.

Front

What color does an object appear if it absorbs all wavelengths of visible light?

Back

The object appears black.

Front

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

Back

As the wavelength increases, the frequency decreases, and vice versa.

Front

What is the wavelength range of visible light?

Back

The wavelength range of visible light is approximately 380 nm to 750 nm.