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Solar energy will always be useful to us because it is a renewable resource. That means that it never runs out, and is being replenished even as it is used. i hope that's helpful :)
The only time it will run out is when the sun runs out of fuel itself and dies, which will take billions of years.
A solar street light is the same as a typical electric street light; however, it is powered by the sun and is typically grid free. The solar panel provides the energy needed to run the light at night and stores the energy in a battery bank. At night, the photocell (solar panel) sees that there is no more sun available and turns the light on. The light runs during the night using the power provided in the battery bank. Most commercial solar street lights provide up to 5 days of backup storage for cloudy and rainy days.
HST runs on electricity supplied by massive Power Supply Units, which get their electricity from the 2 huge Solar Panels on either side of the spacecraft.
sometimes yes, but more often it runs on solar power
There are no air conditioner's here currently available that run only on solar energy.
The sun gives off solar energy, but the sun runs on chemical/nuclear reactions, fusion, converting hydrogen-1 to helium-4.
Nothing. There is plenty of other energy resources. There is so much worry about what will happen when all oil reserves are depleted. By that time we will have advanced technology for electric cars that could travel the circumference of the world. A nuclear explosion releases a huge amount of energy. Imagine if that energy can be safely channeled to homes, factories, and transportation. Nuclear reactors are enough to power the world after there is no oil. There is wind power and solar power and many other undiscovered energy sources. When oil runs out there will be a lot of change, but it will work.
Solar energy has been in continual use since the earliest days of our planet. Anything that grows runs on solar energy. The earliest men understood that the sunlight was necessary for things to grow, and later, to help dry food for preservation. That's "solar energy".
It could be argued that the gasoline it runs on was obtained from oil. This is the remains of ancient plants and organisms dependent on solar energy to grow.
An energy source that never runs out would be called: Impossible. There is no such thing as an energy source that will never run out otherwise it would break the Laws of Thermodynamics and we would all be in big trouble. Renewable energy sources are based on things like wind power, solar power which we expect will last longer than the human species.
Because solar energy runs the water cycle, giving rise to precipitation, and then the rain water flows into the reservoirs of dams.
Renewable, or inexhaustible.
solar energy will never run out because, the sun never runs out of energy.
The earth will just float into space, however the Earth can not get out of the solar system because of the sun's gravitational pull.
You can run on solar energy because the sun helps plants make their food and give humans O2. You eat the plant (like a carrot or cabbage) and breath O2 to live. You need solar energy to start your day with O2 and veggies. Yes, we do run on solar energy. It is possible we run on solar energy because when you eat food like a slice of bread or a baked potato, you consume the energy stored by the plant.
Solar energy will always be useful to us because it is a renewable resource. That means that it never runs out, and is being replenished even as it is used. i hope that's helpful :)