Light: Color, Intensity, Shadows, & Polarization

What are the three primary colors of light?

• Red, Green, Blue
• Green, Yellow, Blue
• Cyan, Magenta Yellow
• Cyan, Magenta, Black

What are the three secondary colors of light?

• Red, Green, Blue
• Green, Yellow, Blue
• Cyan, Magenta, Yellow
• Magenta, Yellow, Black

When the three primary colors mix they produce?

• Red, Green, Blue

• Black

• White

• Magenta, Yellow, Cyan

As one approaches (gets closer) to a light bulb, the brightness of the bulb....

• Increases (brighter)

• Decreases

• Stays the same

• Changes in some unknown way

Tags

NGSS.HS-PS4-3

A student stands 10 feet away from a light bulb. The student walks toward the light bulb to a 5 feet distance. Which is true? Intensity = 1 / d²

• The bulb appears 2x's brighter

• The bulb appears 4x's brighter

• The bulb appears 5x's brighter

• The bulb appears 25x's brighter

What color has a longer wavelength?

• Red

• Yellow

• Blue

• Violet

What color has the highest frequency?

• violet

• red

• blue

• green

Light always travels in a .........................line.

• straight

• curved

• elliptical

• none

A microwave oven emits radiation at a wavelength of 0.050 m. What is the frequency of this radiation?

• 6.67 x 10⁷ Hz

• 2.00 Hz

• 1.50 x 10⁶ Hz

• 6.00 x 10⁹ Hz

Tags

NGSS.HS-PS4-1

Red objects appear 'red' because:

• red objects are made from red materials
• red objects absorb red light
• red objects absorb all other colour except red light
• red objects don't reflect any light

Tags

NGSS.MS-PS4-2