Materials

Question

Observations
cotton
remote control works
aluminum foil
remote control does not work
plastic wrap
remote control works
wax paper
remote control works
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)
• because the aluminum foil blocks the sound waves
• because the aluminum foil blocks the batteries because the aluminum foil blocks the gamma rays
• because the aluminum foil blocks the radio waves

Answer 1

The correct answer is:

• because the aluminum foil blocks the radio waves.

Aluminum foil acts as a conductor and reflects electromagnetic waves, including the radio waves used by the remote control. This is why the remote control does not work when covered with aluminum foil.