Question

Jo’Siah wonders if he can block the radio waves emitted by the remote control used to operate his radio-controlled car. He covers the remote control in different materials and tries to use it to operate his car. His observations are recorded in the table below.



Why does the remote control work with all the materials except when covered with aluminum foil?

(1 point)
Responses

because the aluminum foil blocks the batteries
because the aluminum foil blocks the batteries

because the aluminum foil blocks the gamma rays
because the aluminum foil blocks the gamma rays

because the aluminum foil blocks the sound waves
because the aluminum foil blocks the sound waves

because the aluminum foil blocks the radio waves

Answer 1

because the aluminum foil blocks the radio waves

Aluminum is a good conductor and acts like a Faraday shield, reflecting/absorbing the remote’s radio-frequency signals so they can’t reach the car.