1. There are several types of energy, including kinetic energy, potential energy, thermal energy, chemical energy, nuclear energy, and electromagnetic energy.

2. Some advantages of renewable energy sources include:
- They are sustainable and can be replenished naturally
- They produce lower levels of greenhouse gas emissions, reducing air pollution and mitigating climate change
- They create jobs and stimulate economic growth in the renewable energy sector
- They reduce dependence on fossil fuels and promote energy independence
- They have lower operating costs and can lead to long-term cost savings
- They can provide energy security and stability by diversifying the energy mix.