8.8C Electromagnetic Spectrum

Front

What is the Doppler Effect?

Back

A change in frequency due to the relative motion of a wave source and an observer.

Front

What does a red shift in the observed light from distant galaxies suggest about the universe?

Back

The universe is constantly expanding.

Front

Which electromagnetic waves have the longest wavelengths and lowest frequencies?

Back

Radio waves.

Front

Which everyday device uses radio waves to function?

Back

Cell phone.

Front

Which color of visible light has the shortest wavelength?

Back

Violet.

Front

What is the electromagnetic spectrum?

Back

The range of all types of electromagnetic radiation, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

What type of wave is light?

Back

Light is an electromagnetic wave.

Front

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

Back

As wavelength increases, frequency decreases, and vice versa.

Front

What are microwaves used for?

Back

Microwaves are used for cooking food and in communication technologies.

Front

What is the speed of light in a vacuum?

Back

Approximately 299,792 kilometers per second (km/s).