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16 Problems on the Thermal Energy - Quiz 5 | PHYS 141, Quizzes of Physics

Material Type: Quiz; Class: Secrets of the Universe; Subject: Physics; University: Bucknell University; Term: Unknown 1989;

Typology: Quizzes

Pre 2010

Uploaded on 08/19/2009

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RQ05 Please enter your name.
1. Griff Williams
2. Thomas Cassidy
3. Colby Ricker
4. Rachael Garrison
5. Laura Bender
6. R. Jeff Bloch
7. Mark Kretzer
8. Drew Calvert
9. Megan Fulop
10. Megan Evanoka
11. Dan Speir
12. Sara Halper
13. Richard Petroni
14. Jeff Goerlitz
15. Keith Graham
16. Tim Hinkle
What's the key difference between thermal (heat) energy and bulk kinetic energy?
1. Thermal energy is the motion of all the masses in different directions. There is no net motion over time. Kinetic
energy has motion because all of the masses move in the same direction.
2. Heat energy does not cause a change in position, while bulk energy causes a general motion in a certain
direction.
3. The motion involved in thermal energy has a net movement of zero. The motion also happens on a much
smaller scale
4. In thermal energy, particles move in random directions, while in bulk kinetic energy, the particles all move in
the same direction.
5. Heat energy is characterized by the random motion of the particles. Bulk kinetic energy is characterized by the
ordered direction of the particles.
6. Thermal (heat) energy is the byproduct when gravitational and bulk kinetic energy cease to exist. Since all of
these energies are conserved, it isn't surprising that heat is the outcome in that situation. Heat molocules
move in all different kinds of directions, but stay within the confines of the bulk amount of kinetic energy. The
book uses the example of a beehive moving forward; all of the bees are moving forward, but some move from
side to side.
7. Heat energy doesnt cause an overall movement of an object. It just causes its energy level to rise. Bulk kinetic
energy is characterized by particles moving in one direction instead of random motions as in Heat energy.
8. Heat energy is energy of movement, as is bulk kinetic energy, but the particles are moving in random, so there
is no net movement. With bulk kinetic energy, all the particles are moving together in the same direction.
9. With heat energy (also referred to as random kinetic energy), many masses move randomly in all different
directions. With bulk kinetic energy, the masses all continue in the same direction.
10. Molecules in thermal energy move around in different directions, whereas molecules in kinetic energy all move
together in the same direction.
11. The key difference between thermal energy and kinetic energy is that kinetic energy consists of particles
moving together in the same direction, whereas thermal energy is made up of particles moving in random
directions.
12. thermal energy is particles moving in random directions, bulk kinetic energy is particles all moving in the same
direction
13. The key difference is that heat energy has a random motion in that all the particles bump into each other while
kinetic bulk energy causes the mass to move in the same direction.
14. In thermal energy the molecules are moving all over in different directions, whereas in bulk kinetic energy the
molecule are moving in one direction together
15. In heat energy, particles move in random directions. In bulk kinetic energy, particles are all moving in the
same direction. Example: to increase heat energy of a balloon, I would squeeze the balloon to compress the
gas inside causing the inner particles to randomly bounce around faster. To increase bulk kinetic energy of a
balloon, I would hold the balloon by its string and spin around in a circle so that the balloon and all its inner
particles are moving in the same circle around me.
16. in thernmal energy, the motion of the atoms in in numerous random directions, motion all in one direction is
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Download 16 Problems on the Thermal Energy - Quiz 5 | PHYS 141 and more Quizzes Physics in PDF only on Docsity!

RQ05 Please enter your name.

  1. Griff Williams
  2. Thomas Cassidy
  3. Colby Ricker
  4. Rachael Garrison
  5. Laura Bender
  6. R. Jeff Bloch
  7. Mark Kretzer
  8. Drew Calvert
  9. Megan Fulop
  10. Megan Evanoka
  11. Dan Speir
  12. Sara Halper
  13. Richard Petroni
  14. Jeff Goerlitz
  15. Keith Graham
  16. Tim Hinkle What's the key difference between thermal (heat) energy and bulk kinetic energy?
  17. Thermal energy is the motion of all the masses in different directions. There is no net motion over time. Kinetic energy has motion because all of the masses move in the same direction.
  18. Heat energy does not cause a change in position, while bulk energy causes a general motion in a certain direction.
  19. The motion involved in thermal energy has a net movement of zero. The motion also happens on a much smaller scale
  20. In thermal energy, particles move in random directions, while in bulk kinetic energy, the particles all move in the same direction.
  21. Heat energy is characterized by the random motion of the particles. Bulk kinetic energy is characterized by the ordered direction of the particles.
  22. Thermal (heat) energy is the byproduct when gravitational and bulk kinetic energy cease to exist. Since all of these energies are conserved, it isn't surprising that heat is the outcome in that situation. Heat molocules move in all different kinds of directions, but stay within the confines of the bulk amount of kinetic energy. The book uses the example of a beehive moving forward; all of the bees are moving forward, but some move from side to side.
  23. Heat energy doesnt cause an overall movement of an object. It just causes its energy level to rise. Bulk kinetic energy is characterized by particles moving in one direction instead of random motions as in Heat energy.
  24. Heat energy is energy of movement, as is bulk kinetic energy, but the particles are moving in random, so there is no net movement. With bulk kinetic energy, all the particles are moving together in the same direction.
  25. With heat energy (also referred to as random kinetic energy), many masses move randomly in all different directions. With bulk kinetic energy, the masses all continue in the same direction.
  26. Molecules in thermal energy move around in different directions, whereas molecules in kinetic energy all move together in the same direction.
  27. The key difference between thermal energy and kinetic energy is that kinetic energy consists of particles moving together in the same direction, whereas thermal energy is made up of particles moving in random directions.
  28. thermal energy is particles moving in random directions, bulk kinetic energy is particles all moving in the same direction
  29. The key difference is that heat energy has a random motion in that all the particles bump into each other while kinetic bulk energy causes the mass to move in the same direction.
  30. In thermal energy the molecules are moving all over in different directions, whereas in bulk kinetic energy the molecule are moving in one direction together
  31. In heat energy, particles move in random directions. In bulk kinetic energy, particles are all moving in the same direction. Example: to increase heat energy of a balloon, I would squeeze the balloon to compress the gas inside causing the inner particles to randomly bounce around faster. To increase bulk kinetic energy of a balloon, I would hold the balloon by its string and spin around in a circle so that the balloon and all its inner particles are moving in the same circle around me.
  32. in thernmal energy, the motion of the atoms in in numerous random directions, motion all in one direction is

known as bulk kinetic energy. The book defines temperature as "proportional to the average molecular energy". Please explain this so that someone who isn't in our class could understand it.

  1. Heat is a form of energy. This enrgy is shown by the movement of particls. The more the particls are moving the more heat they contain.
  2. This statement could be liekened to friction. The more something rubs against another surface, the hotter it gets. For instance, rug burn is casued by friction. If molecules move fast, they rub against each other quickly, so the temperature will be higher. If the molecules are moving slowly, the temperature will be lower.
  3. Basically, temperature is a number that relates, on average, how fast (with how much energy) the individual molecules are moving
  4. Heat occurs as molecules move around. The faster the particles move, the higher the temperature. In this way, temperature is dependent on the molecular energy.
  5. In any substance, there are a bunch of molecules moving in all directions which produces heat energy (each molecule has an individual heat energy). When you take the temperature of something, you are really taking the average heat energy of all the molecules.
  6. The higher the molecular energy, the higher the temperature. The lower the molecular energy, the lower the temperature. Think of molecular energy as how fast the heat molecules move around. If you place a thermometer in a cold liquid (where there is low molecular energy), the energy within the thermometer will be transferred over to the cold substance, until both are equal. We can see this happening as the mercury drops. If you place a thermometer in a hot liquid (where there is high molecular energy), the energy within the hot liquid will transfer to the thermometer, making the mercury rise until both are equal.
  7. when heat energy is applied particles move in a random order. because they move so randomly, an average amount of molecular energy must be taken.
  8. This means that temperature is not dependent on volume. The book uses the example of a bathtub. If you measure the temperature of the bathtub, and then scoop a cup of water out of the bathtub and measure the temperature of that, they will be the same because the total temperature is, as stated, proportional to the average molecular energy.
  9. Temperature refers to an average random motions of a group of molecules. When you place a thermometer in a substance, the molecules of that substance move the molecules in the thermometer and the same happens the other way around. All of this causes the height of the mercury to change.
  10. Temperature varies depending on the energy that each molecule has. If they have high energy then the temperature will be higher than if they had low energy.
  11. I would explain it as simply as this; "the higher the average molecular energy is, the faster the particles will be moving, and thus the higher the temperature will be"
  12. the measure of temperature corresponds to the point at which the average energy in a substance is equal to the average energy of the substancein the thermometer. however, the amount of subsatnce is irelevant. Regardless of quanity the temperature will remain constant
  13. Regardless of how much of a substance is present, the temperature will measure the amount of energy that body has. For example, the books talks about the bathtub compared to the cup. Although they are different sizes, they contain the same molecular energy.
  14. This means that faster the molecules are moving, the higher temperture will be.
  15. Molecular energy is the energy molecules have because they are moving. If a group of molecules, in a gas in a container for example, are bouncing around, that gas will have a certain temperature. If the molecules speed or bounce/collide more, they will be moving more, and the temperature of the gas will increase because most of those molecules incresed their energy. So if you found the average molecular energy of that gas, the corresponding temperature would be proportional. In other words, as the avg, molecular energy goes up x units, the temperature goes up y units, and as the avg. molecular energy goes down x units, the temperature will return to its previous state by going down y units.
  16. an isolated system had a certain amount of average molecullar forces. temperature if calculatd by taking the total heat energy and dividing it by the number of molecules What concept/ideas from the reading or previous classes are confusing to you? What issues will require clarification during class?
  17. As dumb as this might sound, I cant find the moon at night. The last two nights have been very clear, yet i still cant see the moon.
  18. I was wondering if bulk kinetic energy also causes heat. If particles moving in different directions cause