Light and Optics

Bounces

• When light hits a surface and changes direction back away from that surface; this is what happens in reflection.

• When light passes through a transparent medium without changing direction.

• When light is absorbed by a surface and converted into heat energy.

• When light is scattered in multiple directions after hitting a rough surface.

Light

• Light is a type of sound energy.

• Light is energy that travels in straight lines and allows us to see.

• Light is a form of matter that has mass.

• Light is a type of electromagnetic wave that cannot be seen.

Reflection

• Reflection occurs when light is absorbed by a surface, preventing us from seeing objects.

• Reflection occurs when light bounces back after striking a surface, enabling us to see objects.

• Reflection occurs when light is scattered in all directions, making objects appear blurry.

• Reflection occurs when light travels through a surface, allowing us to see objects clearly.

Refraction

• The process of light bending as it passes through different materials, such as a straw appearing bent in water.

• The reflection of light off a surface, causing a mirror image.

• The scattering of light in different directions, creating a rainbow effect.

• The absorption of light by a material, preventing it from passing through.

Concave lens

• A lens that is thicker in the middle and thinner at the edges; it converges light rays to a point behind the lens.

• A lens that is thinner in the middle and thicker at the edges; it spreads light rays outward so they appear to come from a point in front of the lens.

• A lens that has a uniform thickness and does not affect light rays.

• A lens that is thicker at the edges and thinner in the middle; it reflects light rays inward.

Appearance

• How something looks to our eyes, including its color, shape, brightness, or whether it looks shiny or dull.

• The way an object feels to the touch, such as rough or smooth.

• The sound an object makes when it is moved or interacted with.

• The temperature of an object, whether it is hot, cold, or warm.

Translucent

• Translucent materials allow all light to pass through clearly.

• Translucent materials allow some light to pass through but scatter it, making objects on the other side appear blurry.

• Translucent materials do not allow any light to pass through.

• Translucent materials are completely opaque.

Absorbed

• Light is reflected when an object bounces back its energy.

• Light is absorbed when an object takes in its energy.

• Light is transmitted when it passes through an object without being absorbed.

• Light is scattered when it is spread out in different directions.

Energy

• The ability to make things happen or change; light is a form of energy that lets us see and can warm objects.

• A measure of the amount of matter in an object.

• The force that opposes motion between two surfaces in contact.

• A type of matter that has mass and takes up space.

Convex lens

• A lens that is thicker in the middle and thinner at the edges; it brings (focuses) light rays together to a point.

• A lens that is thinner in the middle and thicker at the edges; it spreads light rays apart.

• A lens that has a uniform thickness throughout its surface; it does not affect light rays.

• A lens that is made of a flexible material; it can change shape to focus light.