| A | B |
|---|
| flickering | burning or shining in an irregular way |
| expands | becomes larger |
| propel | to cause to move forward |
| gusty | blowing in strong sudden bursts |
| reliable | dependable; able to trust |
| revolving door | a door at the front of a building that moves in a circle |
| converts | changes something into something different |
| currents | flows of electricity |
| fossil fuels | a fuel formed from the remains of plants and animals; coal or petroleum |
| economical | a good use of resources; not wasteful |
| wind | created by the sun when the earth is warmed unevenly |
| windmill | a machine that uses wind power to turn its sails. |
| harnessed | controlled |
| Waterwolf | The Dutch nickname for sea |
| renewable energy | wind and solar power |
