Pigments of Light

A mixture of cyan and yellow paints gives ________ paint.

• Green
• Red
• Black
• Blue

Adding red and green spotlights gives us what color?

• Cyan
• Yellow
• Blue
• Magenta

Suppose that two flashlight beams are shone on a white screen, one through a pane of blue glass and the other through a pane of green glass.  What color appears on the screen where the beams overlap?

• Yellow
• Green
• Cyan
• Magenta

Tags

NGSS.MS-PS4-2

If a car headlight emitted only yellow light, the normally green grass appears to be __________

• Green
• Red
• Black
• Yellow

Tags

NGSS.MS-PS4-2

A mixture of magenta and green light gives white light.  These two colors are _________

• Additive primaries
• Secondary colors
• Complementary colors
• Fluorescent colors

What color would red cloth appear if it were illuminated by cyan light?

• Cyan
• Red
• Yellow
• Black

Tags

NGSS.MS-PS4-2

What color(s) of light are being reflected?

(Choose all that apply.)

• 
• 
• 

Answer explanation

Because you see blue, blue is the only color being reflected.

Tags

NGSS.MS-PS4-2

What pigments are present?

(Choose all that apply.)

• 
• 
• 

Answer explanation

Because you see blue and nothing else, the pigments that share blue must be present. Cyan and Magenta both reflect blue.

What color(s) of light are being reflected?

(Choose all that apply.)

• 
• 
• 

Answer explanation

Because you see red and blue, both colors must be reflected.

Tags

NGSS.MS-PS4-2

What pigments are present?

(Choose all that apply.)

• 
• 
• 

Answer explanation

Because you see green and nothing else, the pigments that share green must be present. Cyan and Yellow both reflect green.

Tags

NGSS.MS-LS1-6