Colour and light

What are the primary colors for adding paints or dyes?

• Red, yellow, and blue
• Yellow, magenta, and cyan
• Red, green, and blue
• Green, blue, and yellow

What is the concept called when colored lights are mixed together?

• Transmissive mixing
• Additive mixing
• Reflective mixing
• Subtractive mixing

What colors do you see when red, green, and blue lights are mixed together?

• Magenta
• Yellow
• Black
• White

Why does the sky appear blue during the day?

• Because blue light is absorbed by the atmosphere
• Because blue light is scattered more due to its short wavelength
• Because blue light is reflected by the atmosphere
• Because blue light is transmitted through the atmosphere

Why do objects appear different colors?

• Because they absorb all colors
• Because they absorb some colors and reflect or transmit others
• Because they reflect all colors
• Because they transmit all colors

What colors do white objects reflect?

• Blue and green
• Red and orange
• All colors
• No colors

What can cause water to appear hues of green or other colors?

• Reflection of all colors of light
• Transmission of all colors of light
• Sunlight bouncing off other particles or sediments within it
• Absorption of all colors of light

What is the definition of photoreceptors?

• Cells in the optic nerve
• Cells in the cornea
• Cells in the retina that detect light
• Cells in the brain that process light signals

What colors do black objects absorb?

• Blue and green
• No colors
• All colors
• Red and orange

What determines the color of visible light?

• Intensity
• Brightness
• Frequency
• Wavelength