Question

which of the following is a type of energy that is not involved in human bodys everyday processes?
mechanical energy
nuclear energy
thermal energy
chemical energy

an increase in the movement of particles in a substance is associated with an increase in ______ energy.
potential
thermal or kinetic
only thermal
mechanical

Explanation:

• First question:
• Mechanical energy is involved in body movements (e.g., walking). Thermal energy is related to body temperature regulation. Chemical energy is from food metabolism. Nuclear energy involves changes in atomic nuclei, which doesn't occur in normal body processes.
• Second question:
• Thermal energy is related to particle motion (kinetic energy of particles). An increase in particle movement means more kinetic energy, and thermal energy is a form of kinetic energy at the particle - level. Potential energy is stored energy (e.g., in chemical bonds, not directly from particle movement). Mechanical energy is macroscopic (e.g., of whole body parts, not just particle - level).

Answer:

• First question: nuclear energy
• Second question: thermal or kinetic