When solar energy is absorbed in the water, its temperature increases, causing thermal expansion and reduced density.

A unique quality of the stone is that it absorbs air and humidly without causing expansion.

Even this far under the surface, some of the heat must seep down enough to cause expansion and contraction.

Energy from the Sun heats this layer, and the surface below, causing expansion of the air.

These cells then undergo further division, causing radial expansion.

This causes continuous expansion of the breast after surgery.

A beam is focused on the surface causing localized heating and thermal expansion.

However, the oil boom of the 1970s caused radical expansion of the village.

The expanded microsphere is a material that has been heated to cause expansion.

The wave reaches the ends and reflects back, causing rapid expansion in the middle.