Electromagnetic Spectrum

Front

What are electromagnetic waves?

Back

Electromagnetic waves are waves that can travel through the vacuum of space and consist of oscillating electric and magnetic fields. They include a range of waves such as radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, organized by wavelength and frequency. It includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

Which electromagnetic waves are used in medical imaging?

Back

X-rays are the electromagnetic waves used in medical imaging to detect broken bones and other internal issues.

Front

What is the relationship between wavelength and frequency?

Back

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

Front

What type of electromagnetic waves can humans see?

Back

Humans can see visible light, which is the only part of the electromagnetic spectrum that is visible to the human eye.

Front

What are infrared rays used for?

Back

Infrared rays are used in devices such as heat lamps and remote controls, as they can transfer heat and information.

Front

What are ultraviolet rays?

Back

Ultraviolet rays are electromagnetic waves that have a shorter wavelength than visible light and can help the body produce vitamin D.

Front

What is the energy level of electromagnetic waves with long wavelengths?

Back

Electromagnetic waves with long wavelengths have low energy and low frequency.

Front

What are gamma rays?

Back

Gamma rays are high-energy electromagnetic waves with very short wavelengths, often used in cancer treatment and medical imaging.

Front

What is the role of microwaves in communication?

Back

Microwaves are used in communication technologies, including satellite transmissions and mobile phones, due to their ability to carry information over long distances.