Reflection & Refraction/ The Human Eye

What happens to light when it reflects off a surface?

• A) It disappears.
• B) It bends at an angle.
• C) It bounces off the surface.
• D) It slows down

What type of surface reflects the most light?

• A) Rough and dull surfaces
• B) Transparent surfaces
• C) Dark-colored surfaces
• D) Smooth and shiny surfaces

According to the law of reflection, the angle of the incoming ray is always __________ the angle of the outgoing ray.

• A) greater than
• B) equal to
• C) unrelated to
• D) smaller than

What is refraction?

• A) The separation of light into colors
• B) The bending of a light wave as it moves through different materials
• C) The absorption of light by dark surfaces
• D) The bouncing of light off a surface

Why does light bend when it passes from one substance into another?

• A) It slows down in denser materials.
• B) It breaks apart into different colors.
• C) It disappears in transparent materials.
• D) It speeds up in denser materials.

What is a lens?

• A) A dark surface that prevents light from passing
• B) A clear piece of glass or plastic that light travels through
• C) A material that absorbs light
• D) A reflective surface that bounces light

How does a concave lens affect light?

• A) It absorbs most of the light.
• B) It bends light at a 90-degree angle.
• C) It spreads the light rays outward.
• D) It makes the light rays come together.

What type of lens is thicker in the middle and brings light rays together at a focus point?

• A) Transparent lens
• B) Concave lens
• C) Convex lens
• D) Plane lens

If you look at an object through a convex lens from a close distance, how will the object appear?

• A) No different
• B) Bigger
• C) Smaller and upside-down
• D) Blurry

Which type of lens is used in eyeglasses for nearsighted people?

• A) Plane lens
• B) Concave lens
• C) Convex lens
• D) Transparent lens