waves Flashcards
what do waves do
transfer energy
describe movement of transverse waves
he movement of energy is 90° to the direction of travel.
examples of transverse waves
electromagnetic
water waves
what is sound
vibrations traveling through medians
(solid,liquid gas)
Which state of matter does sound travel fastest through?
SOLID because the particles are closer together which means the energy is transferred through the vibrations quicker.
what is the law of reflection
The angle of incidence is equal to the angle of reflection.
define refraction
when light travels through a different medium which causes the light to change speed and direction.
how are electromagnetic waves differentiate on the spectrum
wavelength
frequency
what are the longets waves
sound waves
State which of the waves have low frequencies.
Radio waves, microwaves and infrared.
State the shortest wave.
Gamma rays.
State which waves are harmful for us.
Ultraviolet rays, x-rays and gamma rays.
what is inferred radation
heat/thermal energy
