What happens if water is heated from the top?

When water is heated from below, its density decreases, it becomes light and rises up. Cooler water from above comes down and takes the position vacated by hot water. When water is heated from top, it will conduct very small amount of heat to the bottom part of water because water is a poor conductor of heat.

Why is it that heating water at the top of a container the water will never get hot?

Heating liquid in a closed constant volume container The pressure rises, and so the water in it will not boil at the normal boiling point. Instead, it will start boiling at a higher temperature.

Can convection take place in the water if it is heated at the top?

When we’ll heat the top layer of water, it’ll although become less dense but since it’s already at the top, convectional currents wouldn’t take place. Instead, the water that is heated would simply evaporate from the top.

Why is it that when you heat the bottom of the pan containing water the entire water evenly gets hot quickly?

First, the liquid on the bottom of the pot closest to the heat source starts to get hot; as it does, it rises. The water molecules in your pot continually exchange in this way, thanks to gravity, eventually warming the entire pot of liquid.

Why water is heated from below?

Solution 2. Water is heated from below because water is heated by process of convection and in process of convection heat always flows in upward direction from downward direction.

What happens when water is heated further 4?

As the temperature of warm water decreases, the water molecules slow down and the density increases. At 4 °C, the clusters start forming. The molecules are still slowing down and coming closer together, but the formation of clusters makes the molecules be further apart.

How hot can you heat water?

Liquid water can be hotter than 100 °C (212 °F) and colder than 0 °C (32 °F). Heating water above its boiling point without boiling is called superheating. If water is superheated, it can exceed its boiling point without boiling.

How convection occurs in the boiling water in pan?

Overview of Convection In Boiling Water When boiling water, the temperature of molecules within the water increases and they slowly begin to move at a rapid rate, upwards. The hot water molecules become less dense, and they rise above the denser cooler molecules. This movement of molecules creates convection currents.

Can convection occur in water?

Convection currents move thermal energy through many fluids, including molten rock inside Earth, water in the oceans, and air in the atmosphere.

When heat is applied at the bottom of the water vessel then it gets heated more quickly than when it is heated at top Why?

Answer: Explanation: Answer: The water in the vessel gets heated up faster when heated up from bottom than top because when it is heated up from bottom the water gets warm and move up due to its low density… When a substance is heated then it’s density decreases due to which it goes up…

What happens when you heat a glass of water from the top?

So, even if you heat a glass of water from the top (at the center of the liquid surface), the hotter liquid will move to the sides up top, being replaced by colder liquid that comes up from the bottom, thereby setting up a circulating pattern that is quite similar to what you might see if you started heating the liquid from the bottom center.

Where does the electricity to heat water come from?

Electricity to heat water may also come from any other electrical source, such as nuclear power or renewable energy. Alternative energy such as solar energy, heat pumps, hot water heat recycling, and geothermal heating can also heat water, often in combination with backup systems powered by fossil fuels or electricity.

Do water heaters produce a continuous supply of hot water?

These metal vessels that heat a batch of water do not produce a continual supply of heated water at a preset temperature. Rarely, hot water occurs naturally, usually from natural hot springs. The temperature varies with the consumption rate, becoming cooler as flow increases.

What is the difference between hot water and potable water?

Hot water used for space heating may be heated by fossil fuels in a boiler, while potable water may be heated in a separate appliance. This is common practice in the US, especially when warm-air space heating is usually employed.