They are transverse waves.
Yes, they are.
Frequency determines this.
Yes.
They are waves that carry energy in the form of a vibraring electric field.
radiation
Solar energy.
They are electromagnetic.
electromagnetic waves
Electro Magnetic is correct
electromagnetism
Gamma rays have the highest energy and are the most powerful waves on the electromagnetic spectrum.
No difference at all. Radio waves are one of many types of electromagnetic waves.