| A | B |
| NUCLEAR ENERGY | ENERGY CREATED BY SPLITTING THE NUCLEUS OF AN ATOM |
| RADIOACTIVE WASTE | A HARMFUL EFFECT OF NUCLEAR ENERGY |
| HYDROELECTRICITY | CREATED BY THE KINETIC ENERGY OF WATER |
| SOLAR ENERGY | THE MOST ABUNDANT SOURCE OF RENEWABLE ENERGY |
| PHOTOVOLTAIC CELLS | TRANSFORMS SOLAR ENERGY DIRECTLY TO ELECTRICITY TO POWER SATELLITES, CALCULATORS |
| KINETIC ENERGY | ENERGY OF MOTION,'IN USE' |
| POTENTIAL ENERGY | STORED ENERGY |
| FOSSIL FUELS, FOOD, BATTERIES | STORE CHEMICAL 'POTENTIAL' ENERGY |
| FOSSIL FUELS | NONRENEWABLE SOURCE OF ENERGY |
| WIND AND WATER ENERGY | RENEWABLE SOURCES OF MECHANICAL ENERGY |