Electromagnetic Waves REVIEW

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 relationship between frequency and energy in electromagnetic waves?

Back

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

Front

What is the wavelength of a wave?

Back

Wavelength is the distance between two consecutive peaks or troughs in a wave.

Front

How do AM and FM radio waves differ in terms of wavelength?

Back

AM radio waves have longer wavelengths than FM radio waves, allowing them to travel farther without interacting with obstacles.

Front

What type of electromagnetic waves are used in medical imaging?

Back

Gamma rays and X-rays are commonly used in medical imaging due to their high energy and ability to penetrate tissues.

Front

What is the significance of amplitude in electromagnetic waves?

Back

Amplitude refers to the height of the wave and is related to the intensity or strength of the wave; higher amplitude means more energy.

Front

What happens to the wavelength of electromagnetic waves as frequency increases?

Back

As frequency increases, the wavelength decreases.

Front

What are gamma rays?

Back

Gamma rays are a type of electromagnetic radiation with the highest frequency and shortest wavelength, often used in medical treatments.

Front

What is the role of electromagnetic waves in thermal imaging?

Back

Thermal imaging uses infrared waves to detect heat emitted by objects, allowing for temperature differentiation.

Front

How do electromagnetic waves travel through different mediums?

Back

Electromagnetic waves can travel through a vacuum and various materials, but their speed and wavelength may change depending on the medium.