EM Spectrum Flashcard

Front

What are electromagnetic waves?

Back

Electromagnetic waves are waves of energy that travel through space at the speed of light, consisting of oscillating electric and magnetic fields.

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, categorized by wavelength and frequency.

Front

Which electromagnetic waves have the longest wavelength?

Back

Radio waves have the longest wavelength in the electromagnetic spectrum.

Front

Which electromagnetic waves have the shortest wavelength?

Back

Gamma rays have the shortest wavelength in the electromagnetic spectrum.

Front

What is the speed of electromagnetic waves in a vacuum?

Back

All electromagnetic waves travel at the same speed in a vacuum, which is approximately 299,792 kilometers per second (the speed of light).

Front

How does wavelength relate to frequency?

Back

Wavelength and frequency are inversely related; as the wavelength increases, the frequency decreases, and vice versa.

Front

What type of electromagnetic wave is used in medical imaging?

Back

X-rays are commonly used in medical imaging to view the inside of the body.

Front

What is the relationship between energy and frequency in electromagnetic waves?

Back

Higher frequency electromagnetic waves carry more energy than lower frequency waves.

Front

What type of electromagnetic waves can be seen by the human eye?

Back

Visible light is the portion of the electromagnetic spectrum that can be seen by the human eye.

Front

What is the primary use of ultraviolet rays?

Back

Ultraviolet rays are used in sterilization and disinfection, as they can kill bacteria and viruses.