W14 D1 Mini-Exam on Light

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What is the law of reflection?

• A. Light waves bend as they pass through different materials.
• B. The angle of incidence equals the angle of reflection.
• C. Light waves can only reflect from smooth surfaces.
• D. The angle of incidence is always greater than the angle of reflection.

Which material type allows some light to pass through but not all?

• A. Transparent
• B. Opaque
• C. Translucent
• D. Reflective

What determines the color of an object?

• A. The atmosphere
• B. The light it reflects
• C. The light it transmits
• D. Prisms

Which color of light is bent the least when passing through a prism? Hint: This is the first color of the rainbow and it has the longest wavelength.

• A. Red
• B. Violet
• C. Blue
• D. Green

What are the two types of cells in the retina responsible for detecting light?

• A. Rods and cones
• B. Rods and nerves
• C. Cones and lenses
• D. Pupils and cones

What occurs during refraction?

• A. Light waves change speed and direction in a new material.
• B. Light waves bounce back after hitting a surface.
• C. Light waves scatter due to a rough surface.
• D. Light waves absorb all visible wavelengths.

What creates a rainbow?

• A. Reflection of sunlight by raindrops
• B. Scattering of light in the atmosphere
• C. Absorption of light by water molecules
• D. Refraction and dispersion of sunlight by raindrops

What is the result of mixing the primary pigments (red, yellow, and blue) in equal amounts?

• A. White
• B. Black
• C. Gray
• D. Brown

White light is made up of what colors?

• A. None
• B. All of the colors
• C. Only yellow
• D. It depends on whether it is cold or hot