How do we turn that into something much more useful, namely electricity? A nuclear power plant works pretty much like a conventional power plant, but it produces heat energy from atoms rather than by burning coal, oil, gas, or another fuel. The heat it produces is used to boil water to...
How is a diesel engine different from a gasoline engine?Gasoline engines and diesel engines both work by internal combustion, but in slightly different ways. In a gasoline engine, fuel and air is injected into small metal cylinders. A piston compresses (squeezes) the mixture, making it ...
But it's also how we have to live onEarthif we are to protect our environment, which is one of the themes of this year'sWorld Space Week, running between Oct. 4 to Oct. 10. A space station, or a lunar base, is largely a closed-loop system. What we mean by this is that it ...
550K Pollution happens when trash, chemicals, or other substances contaminate the Earth's air, water, or land. Learn how to define pollution, explore facts on how it hurts people and animals, and discover how to stop it. Related to this QuestionWhat...
If energy is not created or destroyed, and we receive energy from the sun constantly, how can we ever face an energy crisis? What are the steps in the recycling process of paper? 1) What is energy? 2) Name the different forms of energy. What are renewable and non-renewable resources?
For instance, Della Bosca and Gillespie [66] show how the sense of place and the emotional attachment between coal and local identities can impede the energy transition. In the mining town of Lithgow near Sydney, economic and social well-being have historically been linked to regional industrial...
Why is copper (II) sulfate solution a good conductor of electricity? Why is rust formed on objects? (a) Name the method used for removing gangue from sulfide ores. (b) How is wrought iron different from ...
This one should come as obvious, but you might be surprised how important proper sleep is. This is especially true during times of intense (紧张) practice or training, where things get so busy it becomes hard to cram (挤满) everything into a usual day. However, your body needs its full...
Not only that, but an electric bicycle is still using energy that has to come from somewhere. You may think you're using clean green power, but the electricity you use for getting about might have come from a filthy old, coal-fired power plant or one driven by nuclear energy. (If you...
The challenge of building a car engine is to get as much energy out of each drop of fuel as possible—to make the car go as far and as fast as it can.How do we get power from petroleum?Cars, trucks, trains, ships, and planes—all these things are powered by fuels made from ...