3 questions 35 points

1) Which of these is an example of mechanical energy transforming into heat energy?
A. burning gasoline
B. sunbathing by the pool
C. lightning creating thunder
D. rubbing your hands together

2) A force that resists two objects rubbing together is called _____.
A. heat
B. friction
C. kinetic energy
D. potential energy

3)As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less.
This is because more and more of the pendulum bob's energy is being transformed into _____.
A. heat energy
B. kinetic energy
C. potential energy
D. kinetic energy and potential energy