Conduction, Convection, and Radiation
Essential Question: What are the different ways in which heat can be transferred in thermal energy??
We are learning about Thermal Energy in science. We conducted three demonstrations to show how heat is transferred through thermal energy.
One demonstration showed how heat transfers through conduction. We had two different materials, a plastic block and a metal block. We placed an ice cube on each block to see which would allow the ice to melt more quickly. When making predictions, some of us thought the metal block would allow the ice to stay in the cube form longer because it felt cold to the touch, so therefore the ice would melt faster on the plastic block. However, the opposite happened. Though the metal block felt colder, it was actually the same temperature as the plastic block. Because it is a good conductor of heat, the heat left our hands more quickly, so therefore it felt colder. When we placed the ice on the blocks, it was amazing to see how fast the ice melted on the metal block!
Yesterday and today we demonstrated convection. We put red food coloring in a large bin of cold water. Then in a small jar, we put in hot water with blue food coloring. The small jar had holes in it to allow water to leave. When the jar was placed in the bin the hot water rose to the top of the cold water, because heat rises. The water was trying to create a balance between the hot and cold. The blue water was now at the top, while the red stayed at the bottom. Colder water is more dense than hot water. In the middle there was a balance of the two where the color started to turn purple. The movement of heat through currents in water is convection.
We also attempted to demonstrate radiation. A lit candle was placed below a spiral of aluminum foil. The infrared heat waves from the fire was supposed to move the spiral, however, due to the movement of air in the room, it was hard to show.
You then drew and described what happened in each demonstration
Click the link below for the song :
Conduction, Convection, and Radiation Song
Mrs. Wiles-Stasko's class REALLY enjoyed the song and wanted to sing nice and loud :)
Heat can be transfered into thermal energy by Convection, Conduction, and radiation.P.S. The Experiments were really fun and cool.
ReplyDeleteWhen I got home from school, I listened to this song over and over again. I wish I was here for the super cool experiment! I just realized that when in the song it says "three ways heat is supplied" that meant, radiation, convection and conduction. The world is so complicated. :}
ReplyDeleteHi Mrs. Cummings! I thought the song was a really neat Idea. I showed it to my younger siblings,and by the end of the song, they were singing too!
ReplyDeleteHi Mrs. Cummings I showed my dad the Convection, Conduction, and Radiation song . . . . he LOVED IT!!!!!
ReplyDeleteI tried the ice cube experiment with a plastic and glass plate. At fist I thought the ice cube on the plastic plate melted faster, but then a did it again and it looked like the ice cube on the glass plate melted quicker. Weird.
ReplyDeleteHi Mrs.cummings the experiment was so cool! I tried it out at home and it blue my mind. Also the song was so fun to sing it taught me a lot and just by singing the lyrics in my head I could probably answer any question about heat.
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