How does the sun emit energy? Did the sun kick-start life on Earth (and the rest of our solar system)? Does the sun rotate? Why does the sun send out solar flares? Will the burn out? (And if so, when? And what will happen to Earth and its inhabitants when the sun dies?) Let...
It’s really proximity that makes the sun so special to Earth (along with the fact that we wouldn’t be here if it weren’t so close). So, how close is the sun? And how much space does it take to hold 1.3 million Earths? And while we’re at it: How does the sun emit energy...
More and more people move from the countryside to big cities. Does this development bring more advantages or disadvantages to the environment? Give reasons for your answer and include any relevant examples from your own knowledge or experience. Write at least 250 words. Task 2 利弊比较题 城市化...
How is solar energy released? This article will explore the composition of the sun. The Sun's Regions The sun does not have a definite boundary as rocky planets do. In its outer parts, the density of its gases drops exponentially with increasing distance from its center. Nevertheless, it ...
Why does the temperature of the sun vary so much? The temperature of the sun relates to the generation, transport, and dissipation of energies. The distinct physical processes occurring in various layers of the sun lead to considerable energy fluctuations, causing the wide range of temperatures ob...
Why do some solar panels produce more energy than others? Of all the metrics to look at when you're shopping for solar panels, cell efficiency is one of the most important. The higher a panel's efficiency, the more power it can produce. Most solar panels have cells that can convert 17...
How Long Does It Take to Break Even With Solar? According to our research,the average payback period for a solar panel system in the U.S. is 8.5 years, compared to the typical lifespan of a solar panel system of at least 25 years. With the average yearly electric savings being $1,53...
How much energy does your entire solar system produce? Solar panel output by product Why does solar panel output matter? Common questions about how much energy a solar panel produces What are solar panel output ratings? All solar panels are rated by the amount of DC (direct current) power th...
How is the size of the solar system calculated What does the solar system produce How to work out the benefits and savings Now let’s take a look at each topic in more detail. What is the difference between power kW and energy kWh? A KiloWatt, or kW, is the power used by an appl...
How much heat can dancers produce? Can the heat energy be stored or used?The S WG3 Arts Center in Glasgow, Scotland used a system called Bodyheat, which can use body heat of the dancers as a source of energy.In the arts center, there are some air collectors taking in the heat produ...