What are the factors that affect linear expansion?

What are the factors that affect linear expansion?

State three factors on which depend the linear expansion of a metal rod on heating. – Physics

• Length of rod L. Increase in length is directly proportional to the original length.
• Temperature of the rod. It is directly proportional to the increase in temperature.
• Nature of material of rod.

What are the factors affecting thermal expansion?

The amount by which it expands depends on three factors: its original length, the temperature change, and the thermal (heat) properties of the metal itself. Some substances simply expand more easily than others.

How can thermal expansion cause problems?

If there’s one area in your home that is hardest hit by thermal expansion, it’s definitely your plumbing system. Since all the pipes in your home are full of water at any given time, thermal expansion creates pressure and stress that can cause damage or wear and tear.

What liquid violates the principle of thermal expansion?

It is important to note that water does not follow the rule of thermal expansion. Water expands when it freezes because the crystalline structure of ice takes up more space than liquid water.

What is caused by the thermal expansion of a substance when heated?

Thermal expansion is caused by heating solids, liquids or gases, which makes the particles move faster or vibrate more (for solids). This means that the particles take up more space and so the substance expands.

What type of pipes should be used to avoid damage by thermal expansion?

Expansion loops should be constructed with straight pipe and 90° elbows, which are solvent cemented together. Avoid restricting natural movement of the pipe in the direction of the expansion and contraction.

What are the disadvantages of thermal expansion?

DISADVANTAGES OF THERMAL EXPANSION OF SOLIDS..

• changing of shape and dimensions of objects such as doors..
• wall collapsing due to bulging..
• cracking of glass tumbler due to heating..
• bursting of metal pipes carrying hot water or steam…

What problems does expansion cause?

The expansion and contraction of materials can also cause problems….It is the space between the particles that changes:

• the particles in a solid vibrate more when it is heated, and take up more room.
• the particles in a liquid move around each other more when it is heated, and take up more room.

What are 2 examples of thermal expansion in liquids?

Liquids

• ENGINE COOLANT. Another example of thermal expansion on the part of a liquid can be found inside the car’s radiator.
• WATER.
• THE GAS LAWS.
• VOLUME GAS THERMOMETERS.
• JAR LIDS AND POWER LINES.
• EXPANSION JOINTS.
• MERCURY IN THERMOMETERS.
• THE BIMETALLIC STRIP IN THERMOSTATS.

What are the examples of linear expansion?

For example, a steel bridge 100 m long will expand 10 times as much as a steel rail 10 meters long when both are heated equally. Secondly, the increase in length is proportional (or practically so) to the increase in temperature which the structure undergoes.