It’s simple to call the difference between hot and also cold water just by feeling them. Yet they act in different way in other ways too. Let"s check out what happens if you put warm water and also cold water into room temperature water.

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ar a couple of ice cubes right into a cup and add two tablespoons the water come make an extremely cold water. Include 1 autumn of blue food coloring to the cold water and gently mix.Ask her adult partner to include two tablespoons of warm tap water come a different cup. Add 1 fall of red food coloring come the hot water and gently mix.Pour room temperature water right into a taller clear plastic cup until it is about ¾-full.Your adult partner need to use a dropper to pick up a dropper-full the cold blue water. Look at the room temperature cup indigenous the side together your adult companion pokes the dropper around halfway into the water and slowly squeezes the cold blue water right into the room temperature water.
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What carry out you observe? does the cold blue water flow down to the bottom the the cup, stay close to the middle, or float to the top?


Next, her adult partner need to use a dropper to pick up a dropper-full of warm red water. Look in ~ the room temperature cup from the side as your adult companion pushes the dropper around halfway right into the water and slowly squeezes the hot red water into the room temperature water.
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What carry out you observe? go the hot red water sink under to the bottom of the cup, stay close to the middle, or float come the top?


The cold blue water will sink in the room temperature water and kind a layer in ~ the bottom of the cup. The hot red water will float to the surface ar of the room temperature water and kind a layer at the top.


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When water is cooled, the water molecules move slower and get closer together. This renders cold water more dense than room temperature water. Due to the fact that cold water is an ext dense, it sink in the room temperature water.

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When water is heated, the water molecules relocate faster and spread out more. This makes warm water less dense than room temperature water. Because hot water is less dense, the floats top top the room temperature water.


When inserted in room temperature water, hot water often tends to move up and also cold water has tendency to relocate down. What perform you think would take place if you put warm water straight on optimal of cold water? Let’s try it and see!


2 identical small clear glass or plastic jars (baby food jars work well)Ice waterHot madness waterThin stiff plastic card (laminated play card or rectangle or square reduced from yogurt or cottage cheese lid)Food coloring (red and also blue)
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