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 electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, organized by frequency and wavelength.

Front

Which electromagnetic wave has the highest frequency?

Back

Gamma rays have the highest frequency in the electromagnetic spectrum.

Front

Which electromagnetic wave has the lowest frequency?

Back

Microwaves have the lowest frequency among the common types of electromagnetic waves.

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 type of telescope is used to observe gamma rays?

Back

Gamma-ray telescopes are used to observe gamma rays, which require placement in orbit to avoid atmospheric interference.

Front

What are X-rays used for?

Back

X-rays are used in medical imaging to view the inside of the body, as they can penetrate soft tissues but are absorbed by denser materials like bones.

Front

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

Back

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

Front

What type of electromagnetic radiation is used in remote controls?

Back

Infrared radiation is commonly used in remote controls for televisions and other devices.

Front

What is visible light?

Back

Visible light is the portion of the electromagnetic spectrum that can be detected by the human eye, with wavelengths ranging from approximately 400 to 700 nanometers.