Friday, November 19, 2010

Test 9:

  1.  Thermal energy is the total energy of all of the particles in one object while temperature and heat is an thermal energy moving from a hotter object to a colder one like when I touch a rock that has been in the snow for two days I am passing heat to it.  Temperature is the measure of the warmness or the coldness of some object compared to a set value.
  2.   Some things get hotter faster than others because their specific heat is a lot more or a lot less than another object.
  3.   One type of heat transfer is conduction and this is when heat transfer is from one place to another without the movement of any matter.  These transfer thermal energy very well and are many types of silver and other things like that.  The reason why silver and those things are conductors are because they are cold to the touch.  They are this way because it is the way the particles are arranged.  Another type is convection and this is when movement of heat transfer is by movement.  These things don’t transfer thermal energy well at all which makes them good for keeping you warm.  That is why they aren’t cold to the touch like conductors.  Some examples are clothes, blankets, and wool socks because these things don’t transfer the thermal energy well.  The last type is radiation and that is the transfer of thermal energy by electromagnetic waves.  Some examples are radio waves, microwave waves, and other object like this.  As humans we can’t see these, we just see a small part of this which is the visible light section.
  4.   You need to raise the temperature by 209,000J.
  5.   A tent would trap the air you are in and make it warmer which would be conduction.  The fire would send out heat to make you warm so that would be radiation.  Both of these would help but a fire would help the most because you would get warmer right away while being in your tent wouldn’t help right away, it would take a long time.  That is why I would build a fire and not set up a tent.

Sites I Used
http://ansleydevore.blogspot.com/
http://griffinscience.com/
http://dictionary.reference.com/browse/temperature

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