Question

introduction to energy
quiz complete
four people make observations recorded in the table.
which best describes what the observations have in common?
they involve nuclear energy.
they involve radiant energy
they involve changes in waves.
they involve changes in energy

Explanation:

• Georgina: A ball falling involves a change from potential energy (due to its height) to kinetic energy (as it moves down).
• Amy: When bonds between atoms change (e.g., in a chemical reaction), there is a change in chemical potential energy.
• Wilhelm: Breaking the nucleus of an atom (nuclear fission or fusion) involves a change in nuclear energy.
• Ron: Heat moving from hot to cold areas (heat transfer) is a change in thermal energy.

In each case, there is a transformation or change in the form of energy.

Answer:

They involve changes in energy.