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- 1. Multiple Choice
Which one uses radio waves?
Notebook
Television
Pencil
Floor
- 2. Multiple Choice
What is the frequency of a radio wave?
low as 1 Hz and as high as 2 gigahertz
low as 3 Hz and as high as 6 gigahertz
low as 3 Hz and as high as 1 gigahertz
low as 4 Hz and as high as 8 gigahertz
- 3. Multiple Choice
How do radio waves work?
A radio works by converting a specific wavelength into vibrations, generating sound from the speakers.
They work by going trough and playing sound
They work by going into the cord and play sound
Radio waves work by converting vibration to speakers
- 4. Multiple Choice
What are radio waves used for on earth?
Wireless transmission of sound messages
Give color to the surrounding
Sterilize medical equipment
Treat cancer cells
- 5. Multiple Choice
Who is credited for the discovery of radio waves?
James Maxwell
Alexander Graham Bell
Benjamin Franklin
Heinrich Hertz
- 6. Multiple Choice
Are radio waves a part of the electromagnetic spectrum?
True
False
- 7. Multiple Choice
Radio waves have a shorter wavelength and higher frequency than infrared rays.
True
False
- 8. Multiple Choice
The main difference between an AM radio and a FM radio is that AM radio works by altering the amplitude while FM radio works by altering the frequency.
True
False
- 9. Multiple Choice
A walkie-talkie or handheld radio works one way, meaning there is multiple transmitters and receivers.
True
False
- 10. Multiple Choice
Radio telescope helps astronomers learn about the motion and chemical composition of these cosmic sources as well as the processes that cause these emissions?
True
False
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