9. What do you understand by convection currents? Give an experiment with diagram to demonstrate convection currents in liquids.
Answers
Answer:
Explanation:
A convection current is a process that involves the movement of energy from one place to another. It is also called convection heat transfer. ... Convection process only happens in the fluids i.e. in liquids and gases. This happens due to the reason that molecules within liquids or gases are free to move.
Answer:
here's the experiment
Fill the tall plastic/glass container with cold water (leave a couple of inches at the top since you're going to put something inside. Fill the small jar with hot water and a drop or two of food coloring (watch how the food coloring moves…). I put the water in the microwave for a minute to heat it up.
Using the string attached to the small jar, lower it to the bottom of the big plastic container
Watch the interaction of the cold and hot water at eye level
EXPLANATION:
Did you see the water “erupting” out of the top of the small jar? I sure hope you did, that was cool. The hot water has a lower density than the cold water and will float, just like when hot air fills up a hot air balloon and floats up. Did you also notice what happened right after all the colored water floated into the big plastic container? Instead of mixing quickly with the rest of the water it stayed separate from the rest. If you wait long enough, the temperature will balance out and then the colors will mix.
hope it helps
can I get some thanks??booo
