Light & Color 2020

Front

What is the electromagnetic spectrum?

Back

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

Front

What is frequency in terms of light?

Back

Frequency refers to the number of waves that pass a point in one second. Higher frequency means more energy and shorter wavelengths.

Front

What are ultraviolet rays?

Back

Ultraviolet rays are a type of electromagnetic radiation with a frequency higher than visible light, which can cause sunburn and skin damage.

Front

What is the relationship between color and light?

Back

Colors are perceived based on the wavelengths of light that are reflected off objects. Different wavelengths correspond to different colors.

Front

What are complementary colors?

Back

Complementary colors are pairs of colors that, when combined, cancel each other out (produce a grayscale color like white or black). For example, red and green are complementary.

Front

What happens when light passes through a prism?

Back

When light passes through a prism, it bends (refracts) and separates into its component colors, creating a spectrum.

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another, caused by a change in its speed.

Front

What is reflection?

Back

Reflection is the bouncing back of light when it hits a surface that it cannot pass through.

Front

What is absorption in terms of light?

Back

Absorption is the process by which light is taken in by a material, converting it to other forms of energy, such as heat.

Front

What is the most harmful type of electromagnetic wave?

Back

Gamma rays are the most harmful type of electromagnetic wave due to their high energy and ability to penetrate most materials.