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# What is expansion and contraction?

## What is expansion and contraction?

Substances expand (increase in size) when they get warmer, and they contract (decrease in size) when they get cooler. This property can be useful. For example: Thermometers work because the liquid inside them expands and rises up the tube when it gets hotter.

What is the expansion of matter?

Most matter expands when heated and contracts when cooled, a principle called thermal expansion. The average kinetic energy of the particles increases when matter is heated and this increase in motion increases the average distance between its atoms.

What is the thermal expansion and contraction of matter?

Thermal expansion occurs when you heat a material and it gains more internal energy, and as the atoms within the material move around faster, and the material expands. Thermal contraction occurs when you cool the material down, and the atoms don’t have that much energy.

### What are the three types of expansion?

Thermal Expansion Formula

• Linear Expansion.
• Area Expansion.
• Volume Expansion.

What is expansion with example?

Expansion is defined as the act of getting bigger or something added onto something else. An example of an expansion is an extra three rooms built onto a house. noun.

Which factor causes expansion in matter?

temperature
As the temperature of the matter increases, the average kinetic energy of the atoms increases and they start to vibrate faster. Due to this the matter expands. So, temperature is the factor which cause expansion.

## What are examples of expansion?

Expansion is defined as the act of getting bigger or something added onto something else. An example of an expansion is an extra three rooms built onto a house.

What is the type of expansion?

There are three types of thermal expansion depending on the dimension that undergo change and that are linear expansion, areal expansion and volumetric volume.

What types of particles undergo expansion and contraction?

Some materials expand on heating and some contract on cooling. Heating makes the particles (that form the material) expand or become loose. Cooling makes the particles (that form the material) contract or become tight.

### Where is the property of expansion and contraction used in daily life explain?

Answer: Answer: Thermal expansion and contraction affect the volumes of liquids that are used every day. Cars provide a good example of this. Cold gasoline in a car’s gas tank expands in hot weather.