# How does the expansion and contraction of a liquid take place?

### How does the expansion and contraction of a liquid take place?

Generally, a body dilate when raising its temperature. Conversely, he contracted when the temperature drops. This is true for most solid bodies, liquids or gas. The main reason is that heating increases the energy of movement of molecules or atoms.

### What is the coefficient of expansion of aluminum?

Expansion coefficients of metals from 0° to 200°C

DesignationsCoefficients
Tin23×10-6
Magnesium25×10-6
Aluminum26×10-6
Brass26×10-6

### What is Linear Dilation?

It is the increase in volume of a body when its temperature increases. This dilation is explained by the increase in the thermal agitation of the particles which constitute the body. If the body is long, its dilation will be especially visible in the direction of the length: we have a linear dilation.

### What is dilation?

DILATATION I: DEFINITION It is the increase in volume of a body when its temperature increases. This dilation is explained by the increase in the thermal agitation of the particles which constitute the body. If the body is long, its dilation will be especially visible in the direction of the length: we have a linear dilation.

### What is the thermal expansion of bodies?

The thermal expansion of bodies affects all substances, regardless of their state, but it is more marked for gases than for solids or liquids. For example, if we heat 1 L of air in order to increase its temperature by °C, the volume of the air will change to approximately 1.36 L.

### How to calculate the linear expansion of a car?

II: A ruler measures 503.°C and 505 mm at 200°C. Calculate the coefficient of linear expansion of the metal and the length of the ruler at 0°C. III: The cooling circuit of an automobile contains 8 liters of water-antifreeze mixture. 1 liter of this mixture expands by 12 cm3 when it goes from 0°C to 50°C.