EMS Waves

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 perpendicular to each other and to the direction of wave propagation.

Front

What is the electromagnetic spectrum?

Back

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

Front

Which type of electromagnetic wave has the longest wavelength?

Back

Radio waves have the longest wavelength in the electromagnetic spectrum.

Front

Which type of electromagnetic wave is used in microwave ovens?

Back

Microwaves are used in microwave ovens to cook food.

Front

What is the frequency range of radio waves?

Back

Radio waves typically have frequencies ranging from about 3 kHz to 300 GHz.

Front

What are X-rays used for?

Back

X-rays are used primarily in medical imaging to view the inside of the body, particularly bones.

Front

What is the principle behind infrared waves?

Back

Infrared waves are primarily associated with heat; they are emitted by warm objects and can be used for thermal imaging.

Front

How do microwaves cook food?

Back

Microwaves cook food by causing water molecules in the food to vibrate, producing heat through friction.

Front

What is the role of visible light in the electromagnetic spectrum?

Back

Visible light is the portion of the electromagnetic spectrum that is visible to the human eye and is responsible for our ability to see.

Front

What are gamma rays and their uses?

Back

Gamma rays are high-energy electromagnetic waves used in medical treatments, such as cancer radiotherapy, and in imaging techniques.