no
no
The type of waves that are electromagnetic are the visible light waves
Light is the visible form of electromagnetic waves.
Light waves are a type of electromagnetic wave that falls within the electromagnetic spectrum. The electromagnetic spectrum includes all types of electromagnetic waves, ranging from radio waves to gamma rays. Light waves are a specific range of electromagnetic waves that are visible to the human eye.
Electromagnetic waves such as x-rays and gamma rays have high frequencies and energies that can damage cells and DNA, leading to health problems like cancer. On the other hand, waves like visible light and radio waves have lower energies that are generally not harmful to human health. The extent of harm depends on the wavelength and intensity of the electromagnetic waves.
Transverse / Electromagnetic depending on the context of the question
Optical light waves are "Electromagnetic" waves. The colour seen is dependent on the wavelength of the light. Electromagnetic waves are transverse waves where the oscillation is 90 degrees to the direction of travel (unlike sound waves which are longitudinal).
All electromagnetic waves travel through space at the "speed of light". Light is one form of electromagnetic waves.
Some harmful electromagnetic waves include ultraviolet rays, X-rays, and gamma rays due to their ability to damage living cells through ionization. Others, such as visible light and radio waves, are typically not harmful because they have lower energy levels that do not cause ionization.
Since that includes light, you'd be blind without them.
electromagnetic waves
Light is an example of a electromagnetic wave.