Electromagnetic Spectrum Flashcards
What is the electromagnetic spectrum?
Several types of radiation waves.
How is visible light connected to the E-M spectrum?
it is a small part of the larger spectrum called electromagnetic spectrum (E-M spectrum).
Name the radiation wave types that make up the E-M spectrum.
X rays, UV (ultra violet), visible, gamma rays, infrared, radio waves, microwaves
Order the types of radiation waves in the E-M spectrum by wavelength starting with the shortest wavelength and finishing with the longest wavelength
Gamma rays, X rays. UV (ultra violet), visible, infrared, microwaves, radio waves.
What is a wavelength?
The distance between waves
What are the dangers and uses of gamma rays?
Sterilise fruit, veg + medical instruments, radio therapy.
Can kill/damage cells + can cause cancer
What are the dangers and uses of x-rays?
Bone X-rays, security at airports, x ray metal for cracks.
Kill/damage cells+ cause cancer
What the dangers + uses of UV (ultraviolet)?
Tanning beds, checking notes, sterilize
Kill/damage cells + cause skin cancer
What are the dangers and uses of visible light?
Light bulbs, tv screen, sun
Over exposure can damage the retina
What are the dangers and uses of infrared light?
Fires + heaters, tv remote
Skin burns
What are the dangers and uses of microwaves?
Ovens, mobiles, satellites
Can heat tissue
What are the dangers and uses of a radio?
radio + satellites
Not really a danger
Give 4 properties of the E-M spectrum
all transverse waves
can travel in vacuums
travel at 300,000,000 m/s in vacuum
All e-m waves travel at speed of light in vacuum
