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1Imagine two open jars placed next to each other in the lecture hall. Each jar is empty in the sense that it contains air alone. One of these jars is considerably LARGER in volume than the other. Which statement below is most likely true?
- AA) Air in the larger jar has a higher temp.
- BB) Both jars contain about the same amount of heat.
- CC) Air molecules in the larger jar are moving faster on average.
- DD) Air in the larger jar contains more heat.
- EE) Air molecules in the larger jar are moving more slowly on average.
2When an incandescent light bulb was demonstrated in class, the _________ as the temp. of the filament increased. This change in the light bulb's emission is described by ________.
- AA) Luminosity of the bulb increased,
The Stefan-Boltzmann Law - BB) Color of the bulb changed,
The Stefan-Boltzmann Law - CC) Color of the bulb changed,
The Doppler Effect - DD) Luminosity of the bulb increased,
Wien's Law - EE) Luminosity of the bulb decreased,
Wien's Law
- AA) Luminosity of the bulb increased,
3The luminosity of light source (e.g. an electric light, a star) can be measured in what units?
- AA) Amperes
- BB) Amperes/sec
- CNewtons
- DErgs per second per square centimeter
- EErgs per second
4As the temperature of a filament in an incandescent lamp increases, the predominant ________ emitted by the filament become ________.
- AA) Wavelengths,
shorter - BB) Frequencies,
lower - CC) Photon energies,
lower - DD) Photon speeds,
lower - EE) Photon speeds,
higher
- AA) Wavelengths,
5Consider two tanks of gas standing next to each other in a room. One tank contains helium the other contains oxygen. Helium atoms are lighter than oxygen atoms. What can we say about the individual gas particles in these tanks (on average)?
- AA) The helium particles have a greater kinetic energy
- BB) The oxygen particles have a greater kinetic energy
- CC) The helium particles are moving faster
- DD) The oxygen particles are moving faster
- EE) Th helium and oxygen particles are moving at the same speed.
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- Descrição
- Quiz sobre Sem título, criado por Sydney Sparks em 02-05-2016.
- Autor
- Sydney Sparks
- Idioma
- English
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