(The following is a silly machine that takes unnecessary steps through different energy transfers to make a cuppa)
A. In this step, the chemical energy from the food I ate lets me move my arm (mechanical energy) to knock over the domino’s
B. In this step, the domino’s cause a chain reaction which knocks them all over; eventually, knocking over a yoyo. This is still mechanical energy.
C. In this step, the yoyo gets pushed down a slide (mechanical energy) by the energy from the domino’s (mechanical energy).
D. In this step, the electric kettle is turned on by the mechanical energy from the yoyo. This causes the kettle to start to draw electricity from the house to heat up water (thermal energy: conduction)
E. In this step, the steam is produced from the kettle heating up water (thermal energy), and this steam rises to push a teeter totter (mechanical energy).
F. In this step, the teeter totter moves down on the side with the teabag on it (mechanical energy), and the tea bag falls into the cup (gravitational energy).
Types of Energy in this Machine:
Chemical: The energy stored in the bonds between atoms that hold molecules together.
Mechanical: The movement of objects or substances from one place to another.
Thermal: The internal energy of a substance due to the vibration of its atoms or molecules.
Gravitational: The energy of an object because of its position of height.