Waves and EM Spectrum Flashcard

Front

What are electromagnetic (EM) 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

Which EM waves have the longest wavelength?

Back

Radio waves have the longest wavelength in the electromagnetic spectrum.

Front

What happens to frequency when wavelength decreases?

Back

When the wavelength decreases, the frequency increases.

Front

What is frequency in terms of waves?

Back

Frequency is the total number of waves produced in one second, measured in Hertz (Hz).

Front

What are the two types of EM waves Meg is detecting while barbequing?

Back

Meg is detecting infrared waves and visible light waves.

Front

What is amplitude in relation to waves?

Back

Amplitude is the height of the wave, which indicates the energy of the wave.

Front

What is the relationship between wavelength and energy of EM waves?

Back

As the wavelength increases, the energy of the EM wave decreases.

Front

What type of EM wave is used in microwave ovens?

Back

Microwaves are the type of EM waves used in microwave ovens.

Front

What is the visible spectrum?

Back

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

Front

What are gamma rays?

Back

Gamma rays are high-energy electromagnetic waves with very short wavelengths, often produced by radioactive materials and certain astronomical processes.