упр.1. Generation of electricity.
Ответьте на вопросы:
- How can electricity be generated?
- How can windmills and waterfalls be used?
- Are most existing windmill installations relatively smal?
- Why do windmills usually arranged in a crisscross configuration?
- Does most electricity from hydroelectric installations come from giant dams?
- Have many of the sites suitable for large dams already been used?
- What can you tell about the small dams in 1970s?
- Are small dams used now to generate electricity?
- Are large-scale hydro projects still being constructed in many developing countries?
- What is the simplest form of solar-powered electricity generation?
- What is the volume of power produced annually on solar powered stations?
- Where are photovoltaic cells used currently?
- Can you explain the principle of photovoltaic cells operation?
- Why do you think that commercial development of still other methods seems far in the future?
- Does ocean thermal conversion generate electricity on offshore platforms?
- Can you explain the principle of power generation in process of ocean thermal conversion?
- What do you think about using space satellites to beam electricity via microwaves down to the earth?