(a(i))[1]
State which of the listed wave types are electromagnetic.
(a(ii))[1]
State which electromagnetic wave has the greatest wavelength.
(a(iii))[1]
State two types of wave that can travel through a vacuum.
(a(iv))[1]
State which of the types of wave is used to produce an image of an unborn baby.
(b)[2]
State two uses for infrared waves.
(c)[2]
Show whether the wave types in Table 7.1 are transverse or longitudinal. Record your response for each type of wave by putting a tick (✓) in one column. Complete every row in Table 7.1.