What is the main type of energy conversion that happens as a skier goes down a hill?
A. Gravitational potential energy to kinetic energy
B. Heat energy to kinetic energy
C. Kinetic energy to gravitational potential energy
D. Kinetic energy to heat energy

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.