Electromagnetic 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. They include a range of waves such as radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

List the types of electromagnetic waves in order from highest energy to lowest energy.

Back

Gamma rays, X-rays, Ultraviolet, Visible light, Infrared, Microwaves, Radio waves.

Front

What is the wavelength of a wave?

Back

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

Front

Which electromagnetic wave has the highest frequency?

Back

Gamma rays have the highest frequency among electromagnetic waves.

Front

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

Back

Higher frequency waves have more energy, while lower frequency waves have less energy.

Front

What are infrared rays used for?

Back

Infrared rays are used in various applications such as remote controls, thermal imaging, and night vision.

Front

What is the visible spectrum?

Back

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

Front

What is the frequency of microwaves compared to visible light?

Back

Microwaves have a lower frequency than visible light.

Front

What are X-rays commonly used for?

Back

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

Front

What is the speed of electromagnetic waves in a vacuum?

Back

The speed of electromagnetic waves in a vacuum is approximately 299,792 kilometers per second (or about 300,000 km/s).