Heat Energy
What is heat energy?
Heat energy is the energy that is associated with the motion of particles in a substance.
Heat energy is the energy that is associated with the motion of particles in a substance.
As heat energy is added to a substance, the temperature of that substance goes up. This means that the particles are moving faster. The faster the particles of a substance are moving, the higher the temperature of the substance. Faster moving particles also mean that the substance has more heat energy.
Source: http://ed.sc.gov/agency/ccr/Standards-Learning/documents/2014Grade6_SupportDoc.pdf
How do particles move in ice, water, and steam?
Source: https://danielmiessler.com/blog/the-steam-water-and-ice-of-modern-communication/
To help understand the relationship between temperature and the movement of particles, consider ice, water, and steam. All three of these are really the same thing, but one is a solid, one is a liquid, and one is a gas. The biggest difference between each of these is how fast the particles move and how much heat energy each one has. The picture below shows how the particles in ice, water, and steam are different.
Source: http://charlottecanvinscience7.weebly.com/unit-overview.html
Where does heat energy come from?
Heat energy comes from various sources. Material (wood, candle wax) that is burning, the Sun, and electricity are sources of heat energy
Heat energy comes from various sources. Material (wood, candle wax) that is burning, the Sun, and electricity are sources of heat energy
Source: http://ed.sc.gov/agency/ccr/Standards-Learning/documents/2014Grade6_SupportDoc.pdf
Source: http://www.clipartpanda.com/
Source: http://media.web.britannica.com/eb-media/66/149866-004-95ACE9E9.gif
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Why does heat energy move?
When one object has more heat energy than another, the heat energy tries to travel between the two until equilibrium is reached. Equilibrium is when two things are in balance. So, the heat energy moves from one object to another so that it can try to balance the heat energy between the two. This image to the left shows two blocks. Block A has a lot more heat energy than Block B. As you can see, the heat energy in Block A moves to Block B when the two touch. Eventually, the two reach equilibrium and have the same amount of heat energy. When this happens, the heat transfer stops. |
Source: http://www.grc.nasa.gov/WWW/k-12/airplane/heat.html
How does heat energy move from one object to another?
Heat energy always transfers from warmer temperatures to cooler temperatures. Heat transfers in three ways: Conduction, Convection, and Radiation. As you continue exploring this website, you will learn more about each of these three and will get to see each of them in action.
Heat energy always transfers from warmer temperatures to cooler temperatures. Heat transfers in three ways: Conduction, Convection, and Radiation. As you continue exploring this website, you will learn more about each of these three and will get to see each of them in action.
Now that you know what heat energy is, you're ready to move on to conduction!