Zusammenfassung der Ressource
Frage 1
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A light wave is a ........ wave
Frage 2
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The electromagnetic radiation with the longest wave length is
Antworten
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Gamma rays
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Visible light
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Micro waves
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Radio waves
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Infra red
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Ultra voilet
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X-rays
Frage 3
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Radio waves have a wave length longer than 10cm
Frage 4
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What do radio waves do when they hit the ionosphere?
Frage 5
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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].
Antworten
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cook
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communicate
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write
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elephants
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people
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satellites
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TV
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ionosphere
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air
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ease
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help
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dificulty
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lead
Frage 6
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how do optical fibers work?
Antworten
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through diffraction
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through reflection
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through refraction
Frage 7
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Sound is caused by what?
Frage 8
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sound waves can travel through a vacuum
Frage 9
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light can travel through a vacuum
Frage 10
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Both light and sound waves can reflect, refract and diffract.