Electromagnetic Flashcard

Front

What is the primary difference between analog and digital signals?

Back

Analog signals are continuous, while digital signals are discrete (separate or divided).

Front

True or False: Ultraviolet (UV) radiation is completely absorbed by the Earth's atmosphere.

Back

False

Front

True or False: Radio waves have the longest wavelength in the electromagnetic spectrum.

Back

True

Front

Gamma rays are the most energetic and have the shortest ______________ in the electromagnetic spectrum.

Back

wavelength

Front

True or False: Gamma rays have the highest energy in the electromagnetic spectrum.

Back

True

Front

What are electromagnetic waves?

Back

Electromagnetic waves are waves of energy that travel through space and include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

What is wavelength?

Back

Wavelength is the distance between successive crests of a wave, typically measured in meters.

Front

What is frequency?

Back

Frequency is the number of waves that pass a given point in one second, measured in hertz (Hz).

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second (km/s).

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, from radio waves to gamma rays.