EM Waves

Front

What are electromagnetic waves (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 a range of waves such as radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, organized by wavelength or frequency. It includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

What is the order of electromagnetic waves from longest to shortest wavelength?

Back

Radio, Micro, Infrared, Visible, Ultraviolet, X-ray, Gamma.

Front

Which type of EM wave has the longest wavelength?

Back

Radio waves have the longest wavelength and the lowest frequency/energy.

Front

Which type of EM wave is used by cell phones?

Back

Cell phones use microwaves to transmit and receive signals.

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another due to a change in its speed.

Front

What is reflection?

Back

Reflection is the bouncing back of light waves when they hit a surface that does not absorb the light.

Front

What are X-rays used for?

Back

X-rays are used in medical imaging to view the inside of the body and in airport security to scan luggage.

Front

What is the relationship between wavelength and frequency?

Back

Wavelength and frequency are inversely related; as the wavelength increases, the frequency decreases, and vice versa.

Front

What is visible light?

Back

Visible light is the portion of the electromagnetic spectrum that can be detected by the human eye, typically ranging from about 400 to 700 nanometers in wavelength.