Unit 3 Test Review 6th Pd

Front

What type of wave requires a medium to travel?

Back

Sound waves require a medium (like air, water, or solids) to travel.

Front

How do digital signals appear on an oscilloscope?

Back

Digital signals have a step-like appearance on an oscilloscope.

Front

What are electromagnetic waves formed by?

Back

Electromagnetic waves are formed by vibrating electric and magnetic fields.

Front

Give an example of a mechanical wave.

Back

Ocean waves are an example of a mechanical wave.

Front

What characterizes digital signals?

Back

Digital signals are characterized by binary values.

Front

What is a medium in the context of wave travel?

Back

A medium is a substance through which a wave can travel, such as air, water, or solid materials.

Front

What is the difference between mechanical and electromagnetic waves?

Back

Mechanical waves require a medium to travel, while electromagnetic waves do not.

Front

What are some examples of electromagnetic waves?

Back

Examples of electromagnetic waves include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

What is the speed of sound in air at room temperature?

Back

The speed of sound in air at room temperature is approximately 343 meters per second.

Front

What is the principle of superposition in wave theory?

Back

The principle of superposition states that when two or more waves overlap, the resulting wave is the sum of the individual waves.