Final answer:
All the statements are correct: light is a form of energy, is necessary for vision, and in its absence, we cannot see. Light is visible electromagnetic radiation essential for life and is instrumental in many processes beyond merely helping us see.
Step-by-step explanation:
The statements that 'light is a form of energy,' 'light is needed to see things around us,' and 'we cannot see objects in a dark room or in the darkness of night even when our eyes are wide open' are all correct. Light energy, or visible light, is a fraction of the electromagnetic radiation emitted by the sun. Without light, we would not be able to see because our eyes require light to interpret our surroundings. Moreover, in complete darkness, our photoreceptor cells in the retina receive no photons to convert into electrical signals, rendering us unable to see objects. Light's energy is harnessed through various forms such as heat and is essential for life on Earth, not only for vision but also for processes like photosynthesis.