EM spectrum Flashcards
What is dispersion?
The splitting of white light into a spectrum of colors when passing through a prism.
Richard Of York Gave Battle In Vain
red orange yellow green blue indigo violet
Which color of light is refracted the most in dispersion?
Violet light is refracted the most.
Which color of light is refracted the least in dispersion?
Red light is refracted the least.
What is the electromagnetic spectrum?
The complete range of electromagnetic waves with different wavelengths and frequencies.
Do all electromagnetic waves travel at the same speed?
Yes, all EM waves travel at the same speed in a vacuum: 300,000,000 m/s.
Order the types of electromagnetic waves from lowest to highest frequency.
Radio waves, Microwaves, Infrared, Visible light, Ultraviolet, X-rays, Gamma rays.
Order the types of electromagnetic waves from longest to shortest wavelength.
Radio waves, Microwaves, Infrared, Visible light, Ultraviolet, X-rays, Gamma rays.
What are the properties of Radio Waves?
Longest wavelength, lowest frequency, used in communication like radio and TV.
What are the properties of Microwaves?
Used for satellite communication, radar, and cooking.
What are the properties of Infrared Waves?
Emitted by hot objects, used in heaters, grills, and remote controls.
What are the properties of Visible Light?
The part of the EM spectrum detected by the human eye.
What are the properties of Ultraviolet (UV) light?
Causes tanning; overexposure can damage skin and cause cancer.
What are the properties of X-rays?
Used in medical imaging; can penetrate soft tissue but not bone.
What are the properties of Gamma Rays?
Highest frequency, very penetrating; used in cancer treatment but can be dangerous to living cells.
What determines the uses and dangers of EM waves?
The wavelength (λ) and frequency (ƒ) of the waves determine their properties, uses, and dangers.
