Phy Flashcards
What does EM spectrum stand for?
Electromagnetic spectrum
Name the seven main types of electromagnetic radiation.
Radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, gamma rays
What is the primary use of radio waves?
Communication, including broadcasting and satellite transmissions
What are microwaves commonly used for?
Cooking food and in radar technology
Which part of the EM spectrum is visible to the human eye?
Visible light
What is one benefit of infrared radiation?
Used in thermal imaging and heating applications
What is a disadvantage of ultraviolet radiation?
Can cause skin damage and increase the risk of skin cancer
What technology uses X-rays for medical imaging?
Radiography
What is the primary benefit of gamma rays in medicine?
Used in cancer treatment for radiation therapy
What is a common application of visible light?
Illumination and photography
How do radio waves differ from gamma rays?
Radio waves have longer wavelengths and lower frequencies than gamma rays
What is one example of a practical application of microwaves?
Microwave ovens
What is the main advantage of using infrared sensors?
Ability to detect heat and motion
Which electromagnetic waves are used in sterilization processes?
Ultraviolet rays
What is a potential health risk associated with X-rays?
Exposure can lead to radiation sickness and increased cancer risk
What is the role of gamma rays in nuclear medicine?
Used for imaging and treatment of various diseases
What type of electromagnetic radiation is used in fiber optic communication?
Visible light or infrared light
What is the main disadvantage of using ultraviolet light for sterilization?
It can be harmful to human skin and eyes
What are the benefits of using radio waves for communication?
Long-range transmission and ability to penetrate obstacles
How does the frequency of electromagnetic waves relate to their energy?
Higher frequency waves have higher energy
What is a common use of visible light in technology?
Display screens in devices like TVs and smartphones
What is the effect of prolonged exposure to infrared radiation?
Can cause thermal burns and skin damage
What is the main use of ultraviolet radiation in cosmetic products?
Used in tanning beds and skin treatments
What is one key advantage of X-ray imaging?
Non-invasive way to view the internal structure of the body
