Sound waves in air and radio waves are both waves.
How may they correctly be described?
Sound waves: longitudinal; Radio waves: longitudinal
Sound waves: longitudinal; Radio waves: transverse
Sound waves: transverse; Radio waves: longitudinal
Sound waves: transverse; Radio waves: transverse
237 exam-style questions on CIE IGCSE Physics General properties of waves, covering General properties of waves. Each one has a worked solution and a mark scheme showing where the marks go.