electromagnetic spectrum

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, which includes radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays.

Front

Which type of electromagnetic waves have the longest wavelength?

Back

Radio waves have the longest wavelength in the electromagnetic spectrum.

Front

Which color of visible light has the shortest wavelength?

Back

Violet light has the shortest wavelength in the visible spectrum.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second (km/s).

Front

What do electromagnetic waves NOT need to transfer energy?

Back

Electromagnetic waves do not need matter to transfer energy; they can travel through a vacuum.

Front

Which type of electromagnetic waves have the shortest wavelength?

Back

Gamma rays have the shortest wavelength in the electromagnetic spectrum.

Front

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

Back

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

Front

What is the visible spectrum?

Back

The visible spectrum is the portion of the electromagnetic spectrum that can be seen by the human eye, typically ranging from about 400 nm (violet) to 700 nm (red).

Front

How do sound waves and light waves differ in terms of speed?

Back

Light waves travel faster than sound waves; light can travel through a vacuum, while sound requires a medium.

Front

What is the frequency of a wave?

Back

Frequency is the number of cycles of a wave that pass a point in one second, measured in hertz (Hz).