Topic 7 Vocabulary Test

A wave made up of a combination of a changing electric field and a changing magnetic field.

• Electromagnetic wave
• Electromagnetic spectrum
• Gamma Rays

A type of material that transmits light without scattering it.

• Transparent
• Translucent
• Opaque

A type of material that scatters light as it passes through.

• Transparent
• Translucent
• Opaque

A type of material that reflects or absorbs all of the light that strikes it.

• Opaque
• Diffuse Reflection
• Focal Point

The point at which light rays parallel to the optical axis meet, after being reflected (or refracted) by a mirror (or lens)

• Convex
• Focal Point
• Concave

Reflection that occurs when parallel light rays hit an uneven surface and all reflect at different angles.

• Opaque
• Diffuse Reflection
• Concave

A mirror that curves outward or lens that is thicker in the center than at the edges

• Diffuse Reflection
• Convex
• Concave

A mirror with a surface that curves inward or a lens that is thinner at the center than at the edges.

• Convex
• Focal Point
• Concave

a description of how a sound in perceived as high or low

• intensity
• decibel
• pitch

The bouncing back of an object or a wave when it hits a surface through which it cannot pass.

• electromagnetic radiation
• motion
• reflection