| A | B |
| The sun is the source of what energy on earth? | heat and light |
| These are all natural sources of energy? | sunlight, water and wind |
| Most of the energy on earth comes from where? | the sun |
| These are fossil fuels | Coal, oil and natural gas |
| These are natural ways to generate energy | Solar, force of the wind or moving water |
| This is how to generate energy from fossil fuels | Burn the fossil fuel |
| Solar energy comes from? | The sun |
| Fossil fuels are formed from? | decaying plants and animals under layers of rocks |
| The amount of time it takes fossil fuel to form? | millions of years. |
| These produce energy when they are burned? | Fossil Fuels |
| Fossil fuels can be in what forms? | Solid, liquids, or gasses |
| Nuclear energy is formed from? | Tiny bits of matter called atoms. |
| Wood produces energy when? | It is burned. |
| Solar energy is produced using? | solar cells, where energy has been stored. |
| Energy sources that can be replaced are? | renewable resources |
| Energy sources that can not be replaced are? | non-renewable resources |
| These are nonrenewable resources | coal, oil, natural gas and nuclear |