Question

Object A and Object B made direct contact for 15 minutes. The temperature of each object was measured before contact was made and after the objects were separated. Object A’s temperature increased by 2°C , and Object B’s temperature dropped by 5°C . Which statement accurately describes the change that has occurred?(1 point) Responses The temperature changes indicate that kinetic energy has transferred from Object B to Object A. The temperature changes indicate that kinetic energy has transferred from Object B to Object A. The temperature changes indicate that kinetic energy contained in Object B has released to the air. The temperature changes indicate that kinetic energy contained in Object B has released to the air. The temperature changes indicate that the motion of molecules in Object B sped up faster than that of molecules in Object A. The temperature changes indicate that the motion of molecules in Object B sped up faster than that of molecules in Object A. The temperature changes indicate that the motion of molecules in both objects decreased.

Answer 1

The statement that accurately describes the change that has occurred is:

The temperature changes indicate that kinetic energy has transferred from Object B to Object A.

This is supported by the fact that Object A's temperature increased, indicating that it gained kinetic energy, while Object B's temperature decreased, indicating that it lost kinetic energy. Therefore, the heat transfer occurred from Object B (which lost energy) to Object A (which gained energy).