The electromagnetic radiation with the longest wave length is
Respuesta
Gamma rays
Visible light
Micro waves
Radio waves
Infra red
Ultra voilet
X-rays
Pregunta 3
Pregunta
Radio waves have a wave length longer than 10cm
Respuesta
True
False
Pregunta 4
Pregunta
What do radio waves do when they hit the ionosphere?
Respuesta
Diffract
Reflect
Refract
Pregunta 5
Pregunta
microwaves are used to [blank_start]cook[blank_end] with [blank_start]elephants[blank_end] because it can pass through the [blank_start]ionosphere[blank_end] with [blank_start]help[blank_end].
Respuesta
cook
communicate
write
elephants
people
satellites
TV
ionosphere
air
ease
help
dificulty
lead
Pregunta 6
Pregunta
how do optical fibers work?
Respuesta
through diffraction
through reflection
through refraction
Pregunta 7
Pregunta
Sound is caused by what?
Respuesta
passing through objects
vibrating particles
Electromagnetic radiation
Pregunta 8
Pregunta
sound waves can travel through a vacuum
Respuesta
True
False
Pregunta 9
Pregunta
light can travel through a vacuum
Respuesta
True
False
Pregunta 10
Pregunta
Both light and sound waves can reflect, refract and diffract.