waves Flashcards
1
Q
what are the properties of electromagnetic waves
A
- they are transverse waves
- they can travel thru vacuum
- they travel at the same speed in vacuum
- they obey laws of reflection and refraction
2
Q
what are the uses of radio waves?
A
radios, over the air communications
3
Q
out of the whole spectrum, which wave has the longest wave length
A
radio
4
Q
examples of uses of infrared radiation
A
intruder alarms, ear thermometers, remote control
5
Q
examples for use of UV radiation
A
sterilization equipment, sunbeds
6
Q
use of X-Rays
A
radiation therapy and imaging
7
Q
use of gamma ray example
A
radiation therapy
8
Q
order of freq or wavelength of electromagnetic waves ?
A
- Radio wave
- microwaves
- infrared
- visible light
5.UV - X ray
- gamma
9
Q
sound waves of long wavelength produce low or high pitched sounds?
A
low n vice versa
10
Q
A large wave length amplitude has a softer or louder sound produced?
A
louder
