Question

Think of one example where heat and friction are good outcomes of a process or machine. Identify the
specific cause of friction in this process and the object(s) that becomes hotter as a result.

Answer 1

Answer:  1. rubbing your hands together to keep warm in winter

2. the parts of a car engine rubbing together causes it to overheat sometimes

3. rubbing sticks together to make fire (it takes about two hours, but the stick gets hot)