Example of thermal expansion:
Spaces or gaps left between rail lines. The reason is that the movement of trains exerts a huge pressure on the rails, this shows up a rise in temp. in the rails made up of Fe .So, the rail expands because of θ. [ rise in temp.= θ]
Most things expand when it's warmed up; i.e. when the heat goes up, the density goes down.
For example, a metal ball weighing 100 grams might barely slink through a hoop, and when it is heated, it is still the same metal ball and weighs the same, it no longer passes through the hole, because the metal ball becomes less dense, and therefore slightly larger.
Some road bridges may have zig-zag shaped joints like monster teeth. This is to allow space for the concrete or asphalt to expand in hot days and not ruin the whole arch.
Refrigerators use a thin plate of two metals stuck back-to-back on each other. When the temperature reaches a certain warmth, the sheet of metal touches a switch, which turns on the current to the cooler. This is why a refrigerator doesn't become too warm or too cold.
Those clinky noises that come from a baseboard heater as it expands and contracts.
Secondly - in a long bridge, the spacer-joints are there so that when the bridge deck heats and expands it does not crumple up.
In my everyday experience, the only solids that need to expand are dehydrated foods, such as dried rice grains, which expand when they absorb water. If you require five of them, I would list rice, noodles, beans, peas, barley.
Bottle tops and jar lids expand so they cannot come off and railway lines have to have expansion spaces so that the trains don't derail in the heat
railway lines , hot air balloon , thermameter , electric iron , automatic candle
These are:
expansion in building an steel bridge.
railway line.
Sagging of telegraph wires.
helium, hydrogen
a hot air balloon
A solid can change Into a liquid when it is heated Example- when heated solid chocolate, the chocolate changes into a liquid. A liquid Can change into a solid when it is cooled Example - If you leave juice in the freezer , the liquid changes into a solid.
it depends on how much it is heated for example when lightning is released it expands the air by thousands of degrees by heat of it.and there is a big banging sound known as thunder
Heated, enclosed infant incubators.
a boiling pot because the stove radiates heat to warm the pot. the pot is touching the stove which is conduction. last when the pot is heated and boiling the steam is a form of convection. conduction could also be ice melting on a hot surface>
I think it is an example on convection.
You can observe colorful light emission in fireworks and in different sorts of chemicals as in Lithium it turns green when heated.
thermal expansion
If water at 0oC is heated, it will contract, instead of expanding. This contratction will continue till 4oC. After 4oC, water will behave as normal substance and start to expand.
sugar
The volume would increase as the pressure of the expanding air increases.
The air and water vapor inside the kernel is expanding.
When heated, the new substance will turn red.
When air is heated it expands. The gas increases volume by 1 percent for every 6 degrees Fahrenheit making it expand.
It depends on what kind of solute was mixed in a solution. for example of NaCl, it would disolved if heated.
cause u get heated up then u cool down and i keeps happening
Not exactly an 'item' as such but Clay is a good example. Paint, glue, epoxy will also harden when heated.
ifk