waves Flashcards
What is a wave lenght?
The distance between two creasts next to each other
What is a trough?
The bottom of a wave
What is frequency?
The number of wave cycles per unit of time
A wave with high frequency carries more or less energy?
More energy
Do waves carry matter?
No, they carry energy
What are radio waves medically used for?
MRIs
What are micowaves medically used for?
drying up tissue
What are infrared rays medically used for?
thermal imaging of different things (cancer)
What is visible light medically used for?
pinpoint cancer
What are ultraviolet rays medically used for?
sterilization, skin disease treatments
What are x-rays medically used for?
image of bones
What are gamma rays medically used for?
radiotherapy, killing cancer cells
How is frequency measured?
Hertz (Hz)
How is amplitude and wavelength measued?
Metric length
Can sound travel through a vaccum?
No, it is a mechanical wave, so it needs particles to travel
