tidal barrages Flashcards
1
Q
what is the most common way to generate electricity through tides
A
tidal barrages
2
Q
what are tidal barrages
A
big dams built across river estuaries with turbines in them
3
Q
how do tidal barrages work
A
as the tide comes in, it fills up the estuary
the water is then allowed through the turbines at a controlled speed
4
Q
how are tides produced
A
by the gravitational pull of the sun and moon
5
Q
what are the main problems of tidal barrages
A
preventing free access by boats
spoiling the view
altering habitat
6
Q
what is the only draw back of tidal barrages
A
the height of the tide is variable so lower tides will provide significantly less energy than bigger “spring” tides
