6 questions
Which of the following produces a magnetic field?
electric current
copper wire
aurora
infrared wave
Electromagnetic radiation produced by which of the following should we protect ourselves from?
X-Ray scan
iPhone
Microwave
ultraviolet light
Our earth works like an electricity generator and produces a magnetic field. Which of the following words describes this?
geodynamo
geodinosaur
geobicycle
geopsychic
Who is the scientist that discovered electromagnetic induction?
Michael Faraday
Nikola Tesla
袁隆平
Victor Frankenstein
Which of the following words is closest in meaning to TRANSMIT?
transfer
transplant
translate
transparent
Which of the following produces electricity?
changing magnetic field
eye contact
sound wave
visible light