EM 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 radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays.

Front

What is the speed of electromagnetic waves in a vacuum?

Back

The speed of electromagnetic waves in a vacuum is approximately 3.00 x 10^8 meters per second.

Front

What is frequency in the context of electromagnetic waves?

Back

Frequency is the number of waves that pass a given point in one second, measured in hertz (Hz). It is inversely related to wavelength.

Front

What is wavelength?

Back

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

Front

What is the relationship between frequency and wavelength?

Back

The relationship is given by the equation: speed = frequency x wavelength. As frequency increases, wavelength decreases.

Front

What is a crest in a wave?

Back

A crest is the highest point of a wave.

Front

What is a trough in a wave?

Back

A trough is the lowest point of a wave.

Front

What happens when two waves meet in the same medium?

Back

When two waves meet in the same medium, they superpose, meaning they combine to form a new wave pattern without bouncing off each other.

Front

What are microwaves used for?

Back

Microwaves are used in various applications, including cooking food, communication, and radar technology.

Front

What is visible light?

Back

Visible light is the portion of the electromagnetic spectrum that is visible to the human eye, ranging from approximately 400 to 700 nanometers in wavelength.