Electrons+EMR

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, from radio waves to gamma rays, including visible light.

Front

What type of electromagnetic waves are used in ovens and cell phone communications?

Back

Microwaves.

Front

Which electromagnetic waves have frequencies higher than ultraviolet rays?

Back

X-rays.

Front

What is frequency in the context of waves?

Back

Frequency is the number of waves that pass a point in one second, measured in Hertz (Hz).

Front

What is the charge of an electron?

Back

The charge of an electron is negative.

Front

What is wavelength?

Back

Wavelength is the distance between successive crests of a wave, usually measured in meters.

Front

What is the relationship between frequency and wavelength?

Back

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

Front

What is the formula to calculate the speed of light?

Back

The speed of light (c) is calculated using the formula c = frequency (f) × wavelength (λ).

Front

What are infrared rays?

Back

Infrared rays are electromagnetic waves with wavelengths longer than visible light but shorter than microwaves, commonly used in remote controls and thermal imaging.