1. What is absolute zero?
2. You have a ball in your hand above the ground at rest which you then drop. What energy is involved in each part of this situation and how do we know that total mechanical energy has been conserved? Explain with and without air resistance present.
3. A boulder and a pebble are sitting on a cliff, which has greater gravitational potential energy and why? A cheetah and a person are racing, both has the same mass, which has a greater kinetic energy and why?
4. Describe thermal expansion/contraction. When temperature rises, which one occurs?