- Temperature and heat are not the same thing. An object can have high temperature and very little heat. An object can also have very low temperature and a lot of heat. Temperature is simply how fast molecules are moving in an object like books on a table. Heat is a form of energy that depends on the temperature as well as the type of molecule, and how many molecules in the object. Temperature is measured with a thermometer. Heat cannot be measured directly.
Thursday, January 5, 2012
Misconceptions concerning temperature and heat
Here is an excerpt taken from the following website (http://www.teachscienceandmath.com/2009/08/31/misconceptions-heat-and-temperature/ )
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Ok so what your saying is that heat Is the total amount of energy contained in one object. When heat is added the molecules go crazy and start bumping into each other ( kinetic energy). The measure of energy of there Collisions is temperature. Heat is energy, temperature is how hot or cold something is, thatS why something can have low energy but still a high temperature. There not always directly related.
ReplyDeleteThis an excerpt from
ReplyDeletehttp://www.clavius.org/heatxfer.html
"The difference between the hot part of an object and the cold part is called its 'thermal gradient'. When a molecule vibrates it passes along a little of its exuberance to neighboring molecules. They too begin to vibrate but the original molecule now vibrates a little less because some of its excitement has been taken by its neighbors. This is how heat spreads through a substance."
This is basically saying that what Ms. Pacino site is describing is heat transfer. Also that the molecule have to break down into the other form before they can move on to the the next form the are going to. Also it takes long for a state of change to occur because all of molecules in each stage or ordered different. Like in liquids and gases those are more spread out than a solid so at each point the molecules are a little more spread out each time.
Michelle I think you are right because that makes sense that heat and temperature aren't always related also that they aren't realated because they are two different things and heat is transferred where temperature is spread through out the object or substance!!:)
ReplyDeleteHeat and temperature are different because heat is the thermal energy of an object, and temperature is how hot or cold an object is. Thermal energy is when the molecules move and create a lot of energy, which results in heat. In the Eureka video about heat, we learned that temperature can cause heat. An example of this is when you set an ice cube out and it melts. The molecules expand, and create a different substance because they adapt to the temperature and the heat changes because liquid's molecules are more spread out than those of a solid form.
ReplyDeleteTemperature is a number that measures energy and heat. Temperature is not energy at all. Temperature is related to the molecules. When the molecules heat up because of energy, the molecules go crazy and start dancing faster. Temperature is just another way to say kinetic energy of the molecules.
ReplyDeleteAt first when I started looking I only found printed articles and they only seemed to confuse me even more. But I found a Eureka video and that helped a ton. What I got out of this was that temperature is the degree of energy (or speed of molecules) and heat is the quantity of energy.
ReplyDeleteTemperature and heat are two different things, because heat is the amount of total energy contained within an item. And heat contains both potential energy and kinetic energy. Where as temperature is the speed of the molecules and how fast they are moving, and only contains kinetic energy.
ReplyDeleteWhen I did a Yahoo search on this topic I found a website where a meteorologist defined the difference between temperature and heat. Basically, heat is energy and has energy units(joules). Temperature is how fast molecules are moving and has units of degrees(fahrenheit, celsius or kelvin). Energy can be transported without having the temperature rise. For example, in the ice lab, energy was added to melt the ice, but the temperature only rose one degree at the most.
ReplyDeleteHeat depends a lot on the molecules in a space. For example, in higher levels of the atmosphere, the air molecules move incredibly quickly. However, the molecules are also spread far apart and hardly bump into anything. They're so far away from each other that the higher atmosphere still feels cold.
ReplyDeleteI found his article saying that heat has two parts potential and kinetic energy but that temperature is only kinetic energy. So basically the sa
ReplyDeleteE thing everyone else is saying. Here is the article I read.
http://www.wereyouwondering.com/what-is-the-difference-between-heat-and-temperature/
I read everyone else's comments and it kind of helped but I think this article helped as well
ReplyDeletehttp://www.huntel.net/rsweetland/science/misconceptions/heat.html
I just needed to understand that they are two different things and overcoming a very common misconception is difficult.
Heat is a molecular energy and temperature is how fast those molecules are moving. Bigger objects have more heat. For example, if you have a pot of boiling water and you put a drop on your hand, it would be hot, but bearable. Now, if you poured the entire pot on your hand, it would cause searing pain. Why? The temperature of the water was the same both times. That is because the drop had less heat than the pot of water, even though they were the same temperatures.
ReplyDelete- Cameron
I understand how they could be mixed up, but I think temperature true is how much heat something has and heat is " the condition or quality of being hot" (dictionary.com)a
ReplyDeleteThis comment has been removed by the author.
ReplyDeleteThis is an excerpt from: http://www.cyberphysics.co.uk/PGCE/Misconceptions/heat&temperature.htm
ReplyDeleteHeat is energy (measured in J) Temperature is how hot or cold a body is - related to the kinetic energy of particles within the body - measured in K)
Change in heat content of a body depends on:
T - change in temperature
m - mass
c - specific heat capacity
I think these definitions of heat and temperature are helpful. They show the difference between the two by saying what units they are measured with.
-this is Ciara E.
ReplyDeletetemperature is a measurment of the average energy of a molecules that an object has.Heat is differnt, heat is the total energy of molecular that an object has. Heat changes by the speed,number,size,and mass of each particle while temperature does not.
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here is a cool link that helped me http://coolcosmos.ipac.caltech.edu/cosmic_classroom/light_lessons/thermal/index.html
I watched the Eureka! video on youtube: http://www.youtube.com/watch?v=rU-sPzshVnM
ReplyDeleteIt helped explain that temperature is only determined by the speed of the molecules, but that heat is determined by both mass and speed. For the statement above (home work question) there can be little heat in a high temperature, because heat is quantity of the hotness and temperature is the degree of hotness.
So the energy levels are different for the types.??
ReplyDeleteIts rad to explain but I'm starting to understand..... The solid, liquid, and gas now .
Even if somethings surface is hot, the temp of the whole object can be different. Temp is due to the molecules movement, while heat Depends on the speed of particles. I got this information from cool cosmos.com
ReplyDeleteHeat is basically the energy transferred from a high-temperature system to a lower-temperature system. So it isn't really directly measurable at all.
ReplyDeleteOkay, I think I get it from watching Eureka! Episode 21 - Temperature vs. Heat. Temperature depends on speed while Heat depends on mass and speed. the quantity of hotness equals heat, and the degree of hotness equals tempurature.
ReplyDelete