A. By burning coal B. By using the force of water C. By nuclear reactions D. By wind turbines 相关知识点: 试题来源: 解析 B。在水力发电站中,电力是通过水的力量产生的。A 选项燃烧煤是火力发电;C 选项核反应用于核电站;D 选项风力涡轮机用于风力发电。反馈...
Similar events also occur today, with human burning of coal and other fossil energies. The team leader Elkins — Tanton says this is an extra incentive (动因)for us to act now. Indeed? taking action may prevent or at least slow another mass extinction event.【小题1】What does the underlin...
Q1 Q1. The table shows how much carbon dioxide is produced when you transfer the same amount of energy by burning coal, gas and oil. (a) Use thegains marks
The industrial revolution has resulted in significant development worldwide. However, it has also caused increases in greenhouse gas emissions, which in turn have driven various international crises – such as famines, droughts, and more generally, climate change. What does carbon...
The most popular way to make steam is to heat water by burning coal. It's also possible to use controlled nuclear reactions to turn water into steam. You can read about the various types of power stations in How Hydropower Plants Work, How Wind Power Works and How Nuclear Power Works. ...
Electricity generated by burning fossil fuels such as coal, oil and natural gas, emits carbon dioxide, nitrogen oxides and sulfur oxides -- gases scientists believe contribute to climate change. Solar thermal (heat) energy is a carbon-free, renewable alternative to the power we generate with ...
Let's say that you turn on the space heater and then look at the power meter outside. The meter's purpose is to measure the amount of electricity flowing into your house so that the power company can bill you for it. Let's assume -- we know it's unlikely -- that nothing else in...
Electric vehicles emit significantly less pollution over their lifetime than traditional automobiles overall. In nations where coal is used to generate electricity, the effects of electric cars are minor, and they can have lifetime emissions comparable to most diesel engines, such as hybrid vehicles....
Also, some energy sources, such as the coal-burning power plants that generate nearly half of U.S. electricity, pour out carbon dioxide, which threatens to change Earth's climate in dangerous ways [source: Dosomething.org]. Energy vampires drain pocketbooks as well. In 2011, each American ...
The real magic isn't that power plants turn fuel into electricity: it's that even small amounts of fossil fuels contain large amounts of energy. A kilogram of coal or a liter of oil contains about 30MJ of energy—a massive amount, equivalent to a good few thousand 1.5-volt batteries!