Item RG006003: Conduction occurs more quickly in solids than in gases because the atoms that make up a gas are farther apart and thus do not interact as often.
In a classroom discussion about the transfer of energy by conduction, one student says that conduction happens faster through solids than gases. Do you agree or disagree and why?
- I agree that conduction occurs faster in solids because the atoms of a solid are not moving around so energy can flow past them more easily. The atoms of a gas are constantly moving around, so the energy cannot travel as easily through the gas.
- I agree that conduction occurs faster in solids because the atoms of a solid are close together and can interact with each other frequently, transferring energy with each interaction. The atoms of a gas are far apart from one another and do not interact as often, so the energy cannot be transferred as easily through the gas.
- I disagree. Conduction occurs faster in gases because the atoms of a gas are free to move from place to place and transfer energy from place to place quickly. The atoms of a solid only vibrate back and forth and cannot transfer energy from place to place as easily.
- I disagree. Conduction occurs at the same rate through solids and gases because the transfer of energy by conduction is not dependent on the movement or arrangement of atoms making up the object it is traveling through.
- Distribution of Responses
- Scale Score for Item Difficulty
(200[Easy]-800[Difficult]) - 505
- Students Responding Correctly
Group | Correct | Total | Percent |
---|---|---|---|
Overall | 628 | 1549 | 41% |
Grades | |||
4–5 | N/A | N/A | N/A |
6–8 | 337 | 860 | 39% |
9–12 | 291 | 689 | 42% |
Gender | |||
Male | 284 | 698 | 41% |
Female | 329 | 820 | 40% |
Primary Language | |||
English | 570 | 1387 | 41% |
Other | 44 | 127 | 35% |
- Disciplinary Core Ideas
- PS1.A In a liquid, the molecules are constantly in contact with others; in a gas, they are widely spaced except when they happen to collide. In a solid, atoms are closely spaced and may vibrate in position but do not change relative locations.
- NRC Framework
- PS3.A. Thermal energy is the random motion of particles (whether vibrations in solid matter or molecules or free motion in a gas), this energy is distributed among all the particles in a system through collisions and interactions at a distance.