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