Unit 3 Test- Waves-8A

Front

What is a Magnetic Field?

Back

A region around a magnet where magnetic forces can be detected.

Front

What is the difference between digital and analog signals?

Back

Digital signals are discrete and represent data in binary form, while analog signals are continuous and can take any value.

Front

What happens to a wave's energy when its amplitude increases?

Back

The wave carries more energy.

Front

What occurs when two magnets are brought closer together?

Back

They will push against each other with a stronger force if they are like poles, or attract each other with a stronger force if they are opposite poles.

Front

What is electric current?

Back

The flow of electric charge through an object.

Front

What is the relationship between wavelength and frequency?

Back

As the wavelength increases, the frequency decreases, and vice versa.

Front

What is an Electromagnet?

Back

A type of magnet in which the magnetic field is produced by an electric current.

Front

What is the principle of superposition in waves?

Back

When two or more waves overlap, the resulting wave is the sum of the individual waves.

Front

What is the speed of a wave?

Back

The distance a wave travels per unit of time, calculated as speed = wavelength x frequency.

Front

What is resonance in the context of waves?

Back

The phenomenon that occurs when a system is driven at its natural frequency, resulting in a large amplitude.