Electromagnetic Radiation

Front

What is electromagnetic radiation?

Back

Electromagnetic radiation is a form of energy that travels through space at the speed of light and includes a range of waves such as radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

What is ultraviolet radiation?

Back

Ultraviolet (UV) radiation is a type of electromagnetic radiation with a wavelength shorter than visible light but longer than X-rays. It can cause skin damage and is the reason sunscreen is used.

Front

What are microwaves used for?

Back

Microwaves are used to vibrate water molecules, which is why they are effective in heating food in microwave ovens.

Front

What produces electromagnetic waves?

Back

Electromagnetic waves are produced by vibrating electric charges.

Front

What is the order of electromagnetic waves from shortest to longest wavelength?

Back

The order from shortest to longest wavelength is gamma rays, X-rays, ultraviolet rays, visible light, infrared waves, microwaves, and radio waves.

Front

What are gamma rays?

Back

Gamma rays are a type of electromagnetic radiation with the shortest wavelength and highest energy, capable of penetrating matter and causing damage to cells.

Front

What is the visible light spectrum?

Back

The visible light spectrum is the portion of the electromagnetic spectrum that is visible to the human eye, typically ranging from wavelengths of about 400 nm (violet) to 700 nm (red).

Front

How do radio waves differ from gamma rays?

Back

Radio waves have the longest wavelength and lowest energy in the electromagnetic spectrum, while gamma rays have the shortest wavelength and highest energy.

Front

What is infrared radiation?

Back

Infrared radiation is a type of electromagnetic radiation with wavelengths longer than visible light but shorter than microwaves, commonly associated with heat.

Front

What is the effect of ultraviolet radiation on human skin?

Back

Ultraviolet radiation can cause skin damage, including sunburn and increased risk of skin cancer, which is why sunscreen is important.