Identify what forms of energy is present or produced in each item.

___________1. lightning
___________2. burning firewood
___________3. sun
___________4. cooking in a rice cooker
___________5. grilling barbeque
___________6. switching on a light bulb
___________7. using the electric heater
___________8. stars
___________9. washing machine
___________10. plucking a guitar