A blacksmith strikes a piece of metal with a hammer repeatedly. The metal slowly begins to glow as the temperature increases, and the metal becomes more malleable. Which changes on a microscopic level led to the visible changes in the properties of the metal? (1 point) Responses The individual temperature of the particles increased. The individual temperature of the particles increased. The potential energy of the particles decreased. The potential energy of the particles decreased. The average speed of the particles increased. The average speed of the particles increased. The kinetic energy of the particles decreased.

Answer 1

The correct response is: The average speed of the particles increased.

As the blacksmith strikes the metal, the input energy from the hammer blows increases the kinetic energy of the particles in the metal. This increase in kinetic energy results in a corresponding increase in the average speed of the particles, which leads to a rise in temperature and the observable changes in malleability and glowing.