What is electromagnetic spectrum in science for kids?
The electromagnetic spectrum includes a wide range of light waves, some that we can’t see. Some of the non-visible types of waves are radio waves, microwaves, infrared rays, and X-rays. These types of waves have all sorts of uses in science and technology.
What is the most important part of the electromagnetic spectrum and why?
Infrared (IR) radiation – also referred to as thermal radiation – is the portion of the electromagnetic spectrum lying between visible light and microwaves. The most important natural source of infrared radiation is the sun.
Why does light turn into a rainbow?
When light meets a water droplet, it is refracted at the boundary of air and water, and enters the droplet, where the light is dispersed into the seven colors. The rainbow effect occurs because the light is then reflected inside the droplet and finally refracted out again into the air.
Why do we see colors in a rainbow?
So when the light exits the water droplet, it is separated into all its wavelengths. The light reflecting back to you, the observer with the Sunlight coming from behind you, from the water droplets will appear separated into all the colors of the rainbow!
What color has the longest wavelength?
On one end of the spectrum is red light, with the longest wavelength. Blue or violet light has the shortest wavelength. White light is a combination of all colors in the color spectrum. It has all the colors of the rainbow.
How is the electromagnetic spectrum used in everyday life?
Electromagnetic waves have a vast range of practical everyday applications that includes such diverse uses as communication by cell phone and radio broadcasting, WiFi, cooking, vision, medical imaging, and treating cancer.
What is meant by electromagnetic spectrum give its four uses?
The electromagnetic spectrum is a continuum of all electromagnetic waves arranged according to Waves and Frequency. EM spectrum uses are: Communication, treat cancer, sterilize medical equipment, killing living organisms.
What are the 4 major regions of the electromagnetic spectrum?
In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.
Is there an upper limit to the electromagnetic spectrum?
The upper limit of the electromagnetic spectrum consist of gamma rays. This is the short wavelength and high frequency range. This gamma rays have energies above 100KeV and are emitted during nuclear fission. Gamma rays have the ability to ionize other atoms and hence are biological dangerous.
What are facts about the electromagnetic spectrum?
The radio waves and microwaves discovered by Hertz paved the way for wireless television and radio and mobile communication.
What is the high end of an electromagnetic spectrum?
This frequency range is divided into separate bands, and the electromagnetic waves within each frequency band are called by different names; beginning at the low frequency (long wavelength) end of the spectrum these are: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays at the high-frequency (short wavelength) end. The electromagnetic waves in each of these bands have different characteristics, such as how they are produced, how they interact with matter
What is the Order of the electromagnetic spectrum?
The EM spectrum is generally divided into seven regions, in order of decreasing wavelength and increasing energy and frequency. The common designations are: radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma rays. See also what do producers need to survive.