Convection!
Source: http://imgbuddy.com/wind-trees.asp
Convection is responsible for the wind that we experience. Without convection, we could never feel a cool breeze on a hot day.
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What is convection?
Convection is the transfer of energy as heat by movement of the heated substance itself, as current in fluids (liquids and gases). In convection, particles with higher energy move from one location to another carrying their energy with them. Convection is responsible for a lot of things in our lives, from the breezes we feel on a windy day to the currents in our oceans. If you've ever stood on the beach and felt the wind, you have experienced convection. Source: http://ed.sc.gov/agency/ccr/Standards-Learning/documents/2014Grade6_SupportDoc.pdf
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How does heat transfer during convection? During convection, particles gain heat energy and move from one location to another. As these particles move, they carry their heat energy with them. Heat transfer occurs when these higher energy particles move from warmer areas to cooler areas. The particles in the bottom of the tea pot to the right have more heat energy because there is higher temperature there. As these particles move towards the top of the tea pot, they transfer heat energy to the particles there because they are in an area of lower temperature. This means that as the particles move from the bottom of the pot to the top, they heat up the water near the top of the pot. Source: http://ed.sc.gov/agency/ccr/Standards-Learning/documents/2014Grade6_SupportDoc.pdf
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Source: http://kids.britannica.com/elementary/art-177312/When-water-is-heated-convection-causes-the-water-at-the
The water in a tea pot shows us how heat transfers during convection. The particles with more heat energy move from areas of higher temperature to lower temperature, transferring heat energy.
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Source: http://ap-physics.david-s.org/convection/
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Do all particles heat up the same way?
Not all particles heat up the same way. Uneven heating can result in convection, both in the air and in water. This causes currents in the atmosphere (wind) and in bodies of water on earth which are important factors in weather and climate. As warm air near Earth's surface rises and then cools as it goes up, a convection current is set up in the atmosphere. On a smaller scale, convection currents near bodies of water can cause local winds known as land and sea breezes, like those on the left. Source: http://ed.sc.gov/agency/ccr/Standards-Learning/documents/2014Grade6_SupportDoc.pdf
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Let's see it in action!
Below is a video that shows heat transfer through convection. This video explains how convection works, the relationship between convection and winds, and how convection affects our lives. As you watch the video, pay attention to how the molecules move and how heat is transferred.
Below is a video that shows heat transfer through convection. This video explains how convection works, the relationship between convection and winds, and how convection affects our lives. As you watch the video, pay attention to how the molecules move and how heat is transferred.
Source: https://www.youtube.com/watch?v=liKcJKjvFcY
On your notecatcher, draw how particles in a beaker move during the convection of heat
Now that you know all about convection, you're ready to move onto... radiation!