What is an aquifer?
Layers of rock (like sandstone) that hold water. Water enters aquifers when rain and melted snow soak into the ground.
What is the name of the technology that uses tides to generate energy?
Tidal barrage
Name one challenge of using water powered technology for energy
Waves are not consistently forceful in all parts of the world, the technology is very expensive, can destroy marine life habitats, can displace people