A solid metal ball has a cavity inside it. When this metal ball is heated, the volume of the cavity will
When the solid metal ball is heated, the particles inside it gain kinetic energy, causing them to move more vigorously, leading to expansion. This expansion includes the volume of the cavity inside the ball, resulting in an increase in its volume. Therefore, the volume of the cavity will increase when heated.
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The correct answer is option A. When the solid metal ball is heated, the particles within it gain kinetic energy, causing them to vibrate more vigorously. This increased vibration leads to expansion throughout the metal, including the cavity inside. As the metal expands, the volume of the cavity increases, resulting in option A: an increase in volume. This phenomenon is due to the thermal expansion properties of the metal, which causes it to expand uniformly in all directions when heated. Therefore, heating the metal ball will cause the volume of the cavity inside it to increase, as the metal expands to accommodate the higher temperature, resulting in a larger volume for the cavity.