Term, Explanation, Heat, Heat is a form of energy transferred from a hotter object to a colder object. It always flows due to a temperature difference., Convection, Convection is the transfer of heat through the movement of liquids or gases. Warm fluid rises while cooler fluid moves downward., Convection Current, A convection current is the continuous circular movement of a fluid caused by heating and cooling. It helps distribute heat throughout the fluid., Fluid, A fluid is a substance that can flow from one place to another. Liquids and gases are fluids., Density, Density tells us how much matter is packed into a given space. A less-dense fluid tends to rise while a denser fluid tends to sink., Expansion, Expansion is the increase in size or volume of a substance when it is heated. Air expands when it becomes hot., Hot Air, Hot air gains thermal energy and expands. It becomes less dense and tends to rise upward., Cool Air, Cool air is generally denser than warm air. It tends to move downward and replace rising warm air., Warm Water, When water is heated, it expands slightly and becomes less dense. It rises above the cooler water., Cool Water, Cooler water is denser than warmer water. It moves downward and replaces the rising warm water., Heat Source, A heat source is something that provides thermal energy. Examples include the Sun, candle, and stove., Thermal Energy, Thermal energy is the energy associated with the motion of particles in matter. It increases when a substance is heated., Air Expansion, When air is heated, its particles move faster and spread farther apart. This causes the air to occupy more space., Smoke Rising, Smoke contains hot gases and tiny particles produced during burning. The hot gases rise with the surrounding warm air through convection., Potassium Permanganate, Potassium permanganate is a coloured substance used as a tracer in the water experiment. Its movement makes convection currents visible., Coloured Tracer, A coloured tracer helps us observe the movement of a fluid. In this experiment, potassium permanganate acts as the tracer., Rising, Rising means moving upward. Warm, less-dense air or water tends to rise during convection., Sinking, Sinking means moving downward. Cooler, denser fluid tends to sink during convection., Heating, Heating means supplying thermal energy to a substance. It can increase the temperature and cause expansion., Cooling, Cooling means removing thermal energy from a substance. It can make a fluid cooler and denser., Conduction, Conduction is heat transfer through direct contact between particles. It is especially common in solids such as metals., Radiation, Radiation transfers heat through electromagnetic waves. It does not require a material medium, as shown by heat from the Sun.

Heat-Term

by
Print
Embed

Leaderboard

Visual style

Options

Switch template

Continue editing: ?