[b]Renewable energy[/b] is an energy source/fuel type that can regenerate and can replenish itself indefinitely through natural means.
[b]Non-renewable energy[/b], in contrast, cannot - so it will one day run out.
[h3]There are renewable and non-renewable sources of energy:[/h3]
[b]Renewable:[/b]
[ul]
[li]Bio-Mass[/li]
[li]Solar[/li]
[li]Geo-Thermal[/li]
[li]Tidal[/li]
[li]Wind[/li]
[li]Wood[/li]
[/ul]
[b]Non-renewable sources of energy:[/b]
[ul]
[li]Coal[/li]
[li]Oil[/li]
[li]Natural Gas[/li]
[ul]
[i]and Nuclear to an extent[/i]
[highlight]Nuclear energy can be seen as [b]non-renewable[/b] as, despite it producing less waste than the other non-renewable sources of energy, it, like them, is in finite amounts[/highlight]
[h3]Forms of energy:[/h3]
[ul]
[li]Sound[/li]
[li]Electric[/li]
[li]Thermal[/li]
[li]Light[/li]
[li]Kinetic[/li]
[li]Elastic[/li]
[li]Gravitation Potential[/li]
[li]Chemical[/li]
[li]Nuclear[/li]
[/ul]
[h3]Energy Transfer Examples[/h3]
[ol]
[li]A TV set transfers [b]electrical[/b] energy to [b]light[/b] energy[/li]
[li]A match transfers [b]kinetic[/b] energy to [b]thermal[/b] energy[/li]
[li]A light-bulb transfers [b]electrical[/b] energy to [b]light[/b] energy[/li]
[li]A catapult transfers [b]elastic-potential[/b] energy to [b]kinetic[/b] energy[/li]
[li]A falling bucket transfers [b]gravitational-potential[/b] energy (when stationary), to [b]kinetic[/b] energy, when in motion[/li]
[/ol]