Colors of Light

Which has the greatest energy among the colors in a rainbow?

• green

• orange

• red

• violet

Among the following colors in a rainbow, which has the least energy?

• green

• red

• violet

• yellow

Which property of light enables the formation of a rainbow?

I. color separation

II. dispersion

III. reflection

IV. refraction

• I and III

• II, III and IV

• I, III, and IV

• I, II, III and IV

Red is the least bent among the seven colors because it has the ___________.

• lowest frequency

• highest frequency

• longest wavelength

• shortest wavelength

What is called the separation of white light into different colors as it passes through prism?

• color separation

• dispersion

• reflection

• refraction

Which of the following orders of visible light colors shows increasing wavelength?

• red, orange, yellow, green, blue, indigo, violet

• red, yellow, green, orange, violet, blue, indigo

• violet, indigo, blue, green, yellow, orange, red

• violet, blue, green, orange, red, indigo, yellow

Why does white light separate into different colors as it passes through a prism?

• The colors are changed by addition.

• This is an example of color by subtraction.

• Different colored light has different wavelengths.

• The side part of a prism only let certain colors of light pass through.

A second prism will change a spectrum back into white light. What does it show?

• Prism distort image.

• Prisms are transparent.

• Light travels at a constant speed.

• White light is composed of colors.

Which color has the shortest wavelength?

• green

• red

• yellow

• violet

White light separated through a prism is an example of ___________.

• diffraction

• rarefaction

• reflection

• refraction