Colours of Light Quiz

What is visible light?

• Light that only comes from the Sun

• Light that is only red in color

• The part of the electromagnetic spectrum that human eyes can detect

• Light that is invisible to the human eye

What is white light?

• Light that contains only one wavelength

• Light that contains all wavelengths

• Light that is only green

• Light that is only blue

Why do objects appear different colors?

• Because they change colors randomly

• Because they reflect all colors

• Because they emit their own light

• Because they absorb some colors and reflect or transmit others

What happens when blue light is shone onto a red shirt?

• The shirt appears blue

• The shirt appears black

• The shirt appears white

• The shirt appears red

What do rods in the retina detect?

• Black, white, and grey

• Only red light

• Color

• Only blue light

How many types of cones are in the human eye?

• Four

• One

• Two

• Three

What are the primary colors of light?

• Green, blue, and yellow

• Red, yellow, and blue

• Yellow, magenta, and cyan

• Red, green, and blue

What is additive mixing?

• Mixing colors of paint

• Mixing colors of fabric

• Mixing colors of dye

• Mixing colors of light

What are the primary colors for mixing paints or dyes?

• Yellow, magenta, and cyan

• Red, green, and blue

• Red, yellow, and blue

• Green, blue, and yellow

How many colors can humans distinguish?

• About 1 billion

• About 100 million

• About 1 million

• About 10 million