EM 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 radiation has the longest wavelength?

Back

Radio Waves.

Front

Which type of electromagnetic radiation has the shortest wavelength?

Back

Gamma Rays.

Front

What is wavelength?

Back

Wavelength is the distance between the crest of one wave and the crest of the next wave.

Front

What is frequency?

Back

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

Front

How are wavelength and frequency related?

Back

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

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 does the term 'Red-shift' refer to in astronomy?

Back

Red-shift refers to the phenomenon where light from distant galaxies is shifted towards the red end of the spectrum, indicating that the universe is expanding.

Front

What type of electromagnetic radiation is used in microwave ovens?

Back

Microwaves.

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 to 700 nanometers in wavelength.