Coolant system questions

1. What is the purpose of the water pump
2. How much energy is converted in to mechanical energy
3. What are the three ways of heat transfer
4. What is the purpose of coolant
5. What are the main components of a cooling system
6. Why do we need flexible water hoses on the cooling system
7. Why are coolant hoses reenforced
8. How is the water pump driven
9. What is the water jacket
10. What is the purpose of the thermostat
11. What is the purpose of the cooling fan
12. Why do some cars have two cooling fans
13. On electric cooling fans, what switches the fans on and off
14. How does the temperature gauge work
15. Why do we have a radiator pressure cap
16. Why do we have a recovery bottle
17. What is electrolysis