WONDER #1021: How Do Metal Detectors Work?
Question 1 of 3
What device is used to detect metal objects hidden from sight?
- metal detector
- yardstick
- tuning fork
- GPS
Question 2 of 3
Very low frequency technology is also known as what?
- VLF
- electromagnetic field
- WiFi
- none of the above
Question 3 of 3
Metal detectors work by detecting a metal object’s what?
- very low frequency
- hardness
- magnetic field
- atomic number
Check your answers online at https://wonderopolis.org/index.php/wonder/How-Do-Metal-Detectors-Work.