The theme is Characteristics of Electromagnetic and mechanical waves

the theme is Characteristics of Electromagnetic and mechanical waves is given below

Explanation:

1.Mechanical waves need matter to transfer energy, while electromagnetic waves do not, they can travel through space or a vacuum. ... Also, electromagnetic waves have the weird quantum property of sometimes acting like waves, and sometimes acting like particles.

2.Electromagnetic waves are waves that have no medium to travel whereas mechanical waves need a medium for its transmission. Electromagnetic waves travel in a vacuum whereas mechanical waves do not. The mechanical waves need a medium like water, air, or anything for it to travel.

3.There are two types of waves: mechanical waves like sound that must travel through a medium like air, and electromagnetic waves like light that don't. Both types of waves transfer energy in a wave-like manner, as that is what a wave is, a physical effect of energy being transferred over space and time.

4.Like other waves, electromagnetic waves have properties of speed, wavelength, and frequency.

5.A mechanical wave is a wave that is not capable of transmitting its energy through a vacuum. Mechanical waves require a medium in order to transport their energy from one location to another. A sound wave is an example of a mechanical wave.

10 years is the answer