Question

1. give one example of luminous light and one example of non - luminous light.

1. what are the types of electromagnetic radiation from longest wavelength to shortest wavelength?

1. what has more energy, microwaves, or gamma rays?

1. what are the types of luminescent light?

1. what are the three properties of light?

Explanation:

Question 1

Luminous light sources produce their own light. The Sun is a natural luminous source as it generates light via nuclear fusion. Non - luminous objects reflect or transmit light from other sources. The Moon is non - luminous as it reflects sunlight.

Electromagnetic radiation types are ordered by wavelength. Radio waves have the longest wavelength, then microwaves, infrared, visible light, ultraviolet, X - rays, and gamma rays (shortest).

Energy of electromagnetic radiation is related to frequency (and inversely to wavelength) by \(E = hf\) (Planck's equation). Gamma rays have a much higher frequency than microwaves, so they have more energy.

Answer:

Luminous light example: The Sun. Non - luminous light example: The Moon.

Question 2