Sound and Light

Science

A lens with a center thinner than its edges

Concave lens

A lens with a center thinner than its edges. Concave lens. A concave lens is a type of lens that spreads out light rays, making objects appear smaller.

A lens with a center thicker than its edges

Convex lens

A lens with a center thicker than its edges. Convex lens. A convex lens bends light rays inward to focus them at a point, making objects look larger.

the number of cycles or vibrations per second, measured in hertz (Hz)

Frequency explained in an easy to understand way.

A material that does not let any light pass through

Opaque

A material that does not let any light pass through. Opaque. In simple terms, "opaque" means you cannot see through it because it blocks all light.

how high or low a sound is, as determined by its frequency

Pitch explained in an easy to understand way.

the bouncing of light, sound, or heat waves off a surface

Reflection explained in an easy to understand way.

The bending of light when it passes from one substance into another

Refraction

The bending of light when it passes from one substance into another. Refraction. Refraction is the change in direction of light as it moves between different materials, like air and water.

The loudness or softness of sound

Sound volume

The loudness or softness of sound. Sound volume. Sound volume is the measure of how loud or soft a sound is perceived by the human ear, influenced by the sound wave's amplitude.

allows some light to pass through but scatters it

Translucent explained in an easy to understand way.

Transparent explained in an easy to understand way.

the rapid back-and-forth movement of matter

Vibration explained in an easy to understand way.

A lens with a center thinner than its edges

A lens with a center thicker than its edges

A material that does not let any light pass through

The bending of light when it passes from one substance into another

The loudness or softness of sound

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