For 25 points.

2. check all that apply. electromagnetic waves are:

 mechanical waves
 transverse waves
 pressure waves
 move perpendicular
 move parallel
 frequency is directly related to speed
 frequency is inversely related to wavelength
 wavelength is directly related to speed
 require a medium
 transfer energy

Transverse waves

Move perpendicular

Frequency is directly related to speed

Frequency is inversely related to wavelength

Wavelength is directly related to speed

Transfer energy

Explanation:

Electromagnetic waves consist of periodic oscillations of electric and magnetic fields. As all waves, they transfer energy, but not matter,

Electromagnetic waves are transverse waves, which means that they oscillate in a plane perpendicular to the direction of propagation of the wave. The speed, the wavelength and the frequency of electromagnetic waves are related by the following equation:

where

c is the speed (speed of light, which is constant for electromagnetic waves travelling in a vacuum)

f is the frequency

is the wavelength

From this equation we see that:

- The frequency is directly related to the speed

- The wavelength is directly related to the speed

- The frequency is inversely related to the speed

power out to power in less than 100%