Electromagnetic Spectrum Flashcards
What do electromagnetic waves transfer?
Electromagnetic waves transfer energy from one place to another
Electromagnetic waves can travel through?
Electromagnetic waves can travel through a vacuum
What wave properties do electromagnetic waves show?
Reflection and refraction
What is the wave eqn which EM waves obey?
Velocity = freq x wavelength
State the 7 components of the EM spectrum (decreasing wavelength and increasing frequency)
Radio waves Rats Micro waves Might Infra-red radiation Indulge Visible light Vividly UV rays Under X-rays Xenophobic Gamma rays Grandmothers
What is the use of radio waves?
Radio and television communication
State the use of microwaves
Microwave oven, satellite TV and phones
State the use of infra-red
Infra-red remote controllers and intruder alarms
State the use of light
Optical fibers for medical use and telecommunications
State the use of UV
Sun beds and sterilization
State the use of X-rays
Radiological and engineering applications
Forgery detection
State the use of gamma rays
Treatment of cancer
Sterilizing equipment
What are examples of ionizing radiations?
X rays and gamma rays
What are properties of ionizing radiations?
They are high-energy radiations with high frequencies or short wavelengths
Why are ionizing radiations harmful to living cells?
- they can cause ionization within living cells
- they are harmful to living cells as this process can result in the destruction of modification of living tissues
