Properties of light energy

Answer 1

frequency, wavelength, inteneity, wave speed, polarization, coherence.

If you want to know what those terms mean, you will need to do some more homework.

Answer 2

I meant to write "intensity", which is the power passing through a given area per time, as electromagnetic radiation. It is also called radiance or irradiance, and varies with location and direction. Sometimes "light" refers only to visible radiation, and is measured in lumens, the definition of which depends upon the human eye response function.

For a better tutorial at your grade level, uses Google.com with the words "what is light"