1
a system in which you can store energy in the form of water in an upper reservoir, pumped from another reservoir at a lower elevation
2
an adjective that means organized in order to make a profit
3
heating or cooling a medium to use the energy when needed later
4
when an event or situation causes other events or situations, but not directly
5
air kept under a pressure that is greater than atmospheric pressure, and is an important medium for transfer of energy in industrial processes
6
salt which is solid at standard temperature and pressure but enters the liquid phase due to elevated temperature
7
a very large metal box used for transporting goods
8
to use something for a different purpose to the one for which it was originally intended
9
an adjective used to describe something in the earliest stages of development
10
small, rounded stones, often mixed with sand
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