Electromagnetic Waves

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 speed of electromagnetic waves in a vacuum?

Back

The speed of electromagnetic waves in a vacuum is approximately 299,792 kilometers per second (or about 300,000 kilometers per second).

Front

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

Back

The frequency and wavelength of electromagnetic waves are inversely related; as frequency increases, wavelength decreases, and vice versa.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, from radio waves to gamma rays, including visible light.

Front

What are the three primary colors of light?

Back

The three primary colors of light are red, green, and blue.

Front

Which type of electromagnetic wave has the highest frequency?

Back

Gamma rays have the highest frequency in the electromagnetic spectrum.

Front

Which type of electromagnetic wave has the longest wavelength?

Back

Radio waves have the longest wavelength in the electromagnetic spectrum.

Front

What is the energy relationship in electromagnetic waves?

Back

The energy of electromagnetic waves is directly proportional to their frequency; higher frequency waves carry more energy.

Front

Why are X-rays used in medical imaging?

Back

X-rays are used in medical imaging because they have higher penetrating energy than other types of electromagnetic waves, allowing them to pass through soft tissue and reveal bones.

Front

What is the difference between infrared and ultraviolet waves?

Back

Infrared waves have longer wavelengths and lower frequencies than visible light, while ultraviolet waves have shorter wavelengths and higher frequencies.