Electromagnetic Sprectrum Flashcards
What is the electromagnetic spectrum?
The electromagnetic spectrum is the range of all types of electromagnetic radiation.
List the types of electromagnetic radiation in order of increasing wavelength.
Gamma rays, X-rays, ultraviolet, visible light, infrared, microwaves, radio waves.
True or False: Visible light is the only part of the electromagnetic spectrum that can be seen by the human eye.
True.
What type of electromagnetic radiation is used in medical imaging?
X-rays.
Which type of electromagnetic radiation has the longest wavelength?
Radio waves.
True or False: Infrared radiation is primarily associated with heat.
True.
What is the primary use of microwaves?
Heating food and communication technologies.
What is the difference between ultraviolet light and visible light?
Ultraviolet light has shorter wavelengths than visible light and can cause skin damage.
Which part of the electromagnetic spectrum is used for satellite communication?
Microwaves.
What type of radiation is primarily responsible for sunburn?
Ultraviolet radiation.
True or False: All electromagnetic waves travel at the same speed in a vacuum.
True.
What is the primary characteristic that distinguishes different types of electromagnetic radiation?
Wavelength and frequency.
Which type of radiation is used in remote controls?
Infrared radiation.
Fill in the blank: The visible spectrum is made up of the colors _____, _____, _____, _____, _____, _____, and _____.
red, orange, yellow, green, blue, indigo, violet
What is the role of ozone in relation to ultraviolet radiation?
Ozone absorbs most of the sun’s harmful ultraviolet radiation.
True or False: Higher frequency electromagnetic waves carry more energy.
True.
What type of electromagnetic radiation is used in night vision technology?
Infrared radiation.
Which type of electromagnetic radiation is utilized for cooking food?
Microwaves.
What happens to the wavelength of electromagnetic radiation as the frequency increases?
The wavelength decreases.
Fill in the blank: The electromagnetic spectrum is divided into regions based on _____ and _____.
wavelength; frequency
What is the primary application of X-rays in healthcare?
To view the inside of the body for diagnostic purposes.
True or False: Electromagnetic waves require a medium to travel through.
False.
What is total internal reflection?
When light is completely reflected back at a boundary between two medium
What determines the colour of visible light waves?
The wavelength and frequency
What colour has the highest frequency?
Blue
What colour has the largest wavelength ?
Red
How does a red filter work
It absorbs The wavelengths of light other than those in the red spectrum
What type of waves are electromagnetic waves ?
Transverse
What electromagnetic wave has the highest frequency?
Gamma
