упр.1. Geothermal Energy.
Ответьте на вопросы:
- What is the geothermal energy based on?
- Is the earth hotter the deeper one drills below the surface?
- Do water and steam circulate through deep hot rocks?
- Can water and steam if brought to the surface be used as source of energy?
- What can we use water and steam for?
- Is it possible to drive a turbine by hot water and steam?
- Can water and steam piped through buildings as heat?
- Do some geothermal energy systems use naturally occurring supplies of geothermal water and steam?
- Does hot water and steam lie so deep that drilling holes to valve it is very expensive?