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Does hot air really rise? - Physics Stack Exchange
https://physics.stackexchange.com/questions/6329/does-hot-air-really-rise
WEBHot air will not rise if it's surrounded by hotter air... Look at the example of a helium balloon, for example. Although the "air" inside the balloon might be colder than the surrounding air, it can still rise - because the gas inside is less dense.
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Heat and temperature (article) | Khan Academy
https://www.khanacademy.org/science/chemistry/thermodynamics-chemistry/internal-energy-sal/a/heat
WEBSpecific heat capacity usually has units of J grams ⋅ K . The molar heat capacity, C m or C mol , measures the amount of thermal energy it takes to raise the temperature of one mole of a substance by 1 ∘ C or 1 K , and it usually has units of J mol ⋅ K .
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Thermal conduction, convection, and radiation - Khan Academy
https://www.khanacademy.org/science/physics/thermodynamics/specific-heat-and-heat-transfer/v/thermal-conduction-convection-and-radiation
WEBConduction involves molecules transferring kinetic energy to one another through collisions. Convection occurs when hot air rises, allowing cooler air to come in and be heated. Thermal radiation happens when accelerated charged particles release electromagnetic radiation, which can be felt as heat. Questions.
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What makes heat rise? - Science Questions with Surprising Answers
https://www.wtamu.edu/~cbaird/sq/2014/07/10/what-makes-heat-rise/
WEBJul 10, 2014 · Heat does not rise, hot air does (usually). Heat can spread out in all directions. There are three main ways for heat to travel: Radiation: All wavelengths of electromagnetic waves, including light, carry energy.
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Heat - A simple introduction to the science of heat energy
https://www.explainthatstuff.com/heat.html
WEBMar 24, 2022 · Artwork: Normally things get hotter (their temperature rises) as you supply more heat energy. That doesn't happen at the points when things melt (change from solid to liquid) and vaporize (turn from liquid to gas). Instead, the energy you supply is used to change the state of matter. The energy doesn't vanish: it's stored as latent heat.
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Climate Change: Global Temperature | NOAA Climate.gov
https://www.climate.gov/news-features/understanding-climate/climate-change-global-temperature
WEBJan 18, 2024 · The roughly 2-degree Fahrenheit (1 degrees Celsius) increase in global average surface temperature that has occurred since the pre-industrial era (1850-1900 in NOAA's record) might seem small, but it means a significant increase in accumulated heat.
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Heat | Definition & Facts | Britannica
https://www.britannica.com/science/heat
WEBApr 16, 2024 · In general, the amount of energy required to raise a unit mass of a substance through a specified temperature interval is called the heat capacity, or the specific heat, of that substance. The quantity of energy necessary to raise the temperature of a body one degree varies depending upon the restraints imposed.
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Convection | Definition, Examples, Types, & Facts | Britannica
https://www.britannica.com/science/convection
WEBCirculation caused by this effect accounts for the uniform heating of water in a kettle or air in a heated room: the heated molecules expand the space they move in through increased speed against one another, rise, and then cool and come closer together again, with increase in density and a resultant sinking.
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Heat energy — Science Learning Hub
https://www.sciencelearn.org.nz/resources/750-heat-energy
WEBHeat energy is the result of the movement of tiny particles called atoms, molecules or ions in solids, liquids and gases. Heat energy can be transferred from one object to another. The transfer or flow due to the difference in temperature between the two objects is called heat.
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11.2 Heat, Specific Heat, and Heat Transfer - OpenStax
https://openstax.org/books/physics/pages/11-2-heat-specific-heat-and-heat-transfer
WEBOne of the major effects of heat transfer is temperature change: Heating increases the temperature while cooling decreases it.
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