Question

When you rub your hands vigorously, your hands become hot. Why?

• A. Hands become hot because of their size
• B. Rubbing causes friction between the hands which in turn produces heat
• C. Nothing actually happens
• D. Rubbing of hands requires energy to be which is provided by heat energy

Answer 1

The correct option is B

Rubbing causes friction between the hands which in turn produces heat

When hands are rubbed vigorously, friction is developed and this causes the hands to warm up. The greater the amount of friction between two objects is, the more heat is generated.