# What happens to the motion of the water as it is heated?

## What happens to the motion of the water as it is heated?

When water is heated, it evaporates. The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor.

Why does heat travel faster in water?

Molecules in a liquid have enough energy to move around and pass each other. Warm water has more energy than cold water, which means that molecules in warm water move faster than molecules in cold water. The food coloring you add to the water is pushed around by the water molecules.

Why does water heat slower than other substances?

Compared to air or land, water is a slow conductor of heat. That means it needs to gain more energy than a comparable amount of air or land to increase its temperature. Also, water’s fluid structure means its molecules are in a constant state of motion.

### What happens to the speed of molecules when water is heated?

Heating a liquid increases the speed of the molecules. An increase in the speed of the molecules competes with the attraction between molecules and causes molecules to move a little further apart. Cooling a liquid decreases the speed of the molecules.

Does heat transfer faster in water or air?

Though heat is lost faster to water because, even though the rate of heat transfer to air is faster than to water, the “amount” of heat transferred to water is greater than air.

Why does water move at a higher speed than the core?

A thin “boundary layer” of fluid creeps along the inner wall as the bulk of the fluid moves at higher speeds down the “core” of the flow stream. Because fluid molecules in the boundary layer do not aggressively mix with those in the core of the flow stream, they give up heat to the tube wall and cool down more than fluid molecules in the core.

## How much heat is released when water is moving fast?

At 0.2 gallons per minute, only 10 per cent of the maximum flow rate shown on the graph, the circuit releases about 44 per cent of the maximum heat output. Increasing flow from one to two gpm only increases heat output about 11 per cent.

What happens when you increase the flow rate of water?

Increased flow rate again results in increased upward heat output. The gains are much more noticeable at lower flow rates than at higher flow rates. At 0.2 gallons per minute, only 10 per cent of the maximum flow rate shown on the graph, the circuit releases about 44 per cent of the maximum heat output.

Why does hot water have more molecules than cold water?

So hot water takes up more space than cold water. The amount of space something takes up is called volume. If you were to have 2 cups of water, one of hot water and one of cold water with equal volumes, the cold water would have more molecules. Hot and cold water are made of the same type of molecules.