How is wavelength measured?

• A

• B

• C

• D

Red light waves have a longer wavelength than violet light waves. What can you conclude from this?

• Violet light waves have a negative frequency.

• Violet light waves have a smaller frequency.

• Violet light waves have the same frequency.

• Violet light waves have a higher frequency.

Gamma rays have a higher frequency than visible light waves. What can you conclude from this?

• Gamma rays carry more energy than visible light waves.

• Gamma rays carry less energy than visible light waves.

• Gamma rays can't be seen; visible light rays can.

• Gamma rays have a longer wavelength than visible light waves.

What is the electromagnetic spectrum? Choose the best answer.

• The way that electricity travels into space.

• The waves generated by electromagnets.

• A collection of different types of electromagnetic radiation.

• The spectrum of different colors of visible light.

What are the main colors in the visible light spectrum?

• Red, green, and blue

• Red, orange, yellow, green, blue, indigo, and violet

• Black and white

• Cyan, yellow, and magenta

What are the primary colors of light?

• Red, green, and blue

• Black, white, and gray

• Green, yellow, and red

• Red, orange, yellow, green, blue, indigo, and violet

The different colors of the visible light spectrum coalesce to make white light. What is the best synonym for "coalesce?"

• Divide

• Separate

• Combine

• End up

Why does a red ball look red?

• Because it reflects red light waves and absorbs all others.

• Because it absorbs red light waves and reflects all others.

• Because it absorbs red light and reflects white light.

• Because it absorbs all colors of light.

What are the primary pigment colors?

• Red, green, and blue

• Cyan, magenta, and yellow

• Orange, mauve, and purple

• Blue, red, and yellow

How is mixing the primary pigment colors together different from mixing the primary colors of light together?

• Mixing the primary pigment colors gives you black; mixing the primary colors of light gives you white light.

• Mixing the primary pigment colors gives you white; mixing the primary colors of light gives you black light.

• Mixing the primary pigment colors gives you brown; mixing the primary colors of light gives you blue, green, and red.

• Mixing the primary pigment colors gives you a spectrum of color; mixing the primary colors of light gives you no color.