four examples of contractions in science
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Answer:
When the movement of particles speeds up, there is an increase in the space between them.
An increase in the space between particles means that the substance expands.
In other words, there is an increase in the volume (space) it occupies.
When the movement of particles slows down, there is a decrease in the space between them.
A decrease in the space between particles means that the substance contracts.
In other words, there is a decrease in the volume (space) it occupies.
This general relationship between particle movement and volume is the same for solids, liquids and gases.
However, the extent to which a substances expands or contracts varies between the different states of matter.
Table lists some examples of contraction. If we hold a very hot glass tumbler under cold water, it cracks. This is because the outer surface of the glass comes in direct contact with cold water and contracts more as compared to the inner surface. We observed that water expanded on heating.