Answer:
A radio wave is an electromagnetic wave.
Explanation:
A radio wave is an electromagnetic wave that is commonly used in information dissemination such as radio, television sets, etc.
They collect the radio waves, convert them to an electromagnetic spectrum which in turn converts them to sound waves.
Radio waves used to study galaxies are electromagnetic in nature.
Because radio waves have the longest wavelengths which can vary between 0.05 inches to 60 miles and because they have the lowest frequency, they are ideal for studying radio waves that comes from stars and galaxies
