Reading Quiz - Temperature. 1. All matter is made of \_\_\_ 1. Atoms. \_\_\_ 2. Combinations of earth, wind, fire and water. \_\_\_ 3. Identical particles. \_\_\_ 4. Cells. 2. Which of the following is a temperature scale? \_\_\_ 1. Celsius. \_\_\_ 2. Fahrenheit \_\_\_ 3. Kelvin.
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1. All matter is made of
___ 1. Atoms.
___ 2. Combinations of earth, wind, fire and water.
___ 3. Identical particles.
___ 4. Cells.
___ 1. Celsius.
___ 2. Fahrenheit
___ 3. Kelvin.
___ 4. All of the above.
___ 1. not be affected
___ 2. expand
___ 3. contract
1) What is the problem with 0°C = 32°F = 273.15K?
____ a) this is mathematically incorrect
____ b) this is mathematically correct
____ c) mixes units
____ d) there is no problem
____ a) the same for all three thermometers
____ b) the three read slightly different
____ c) the three read very different temperatures
1) At what temperature is the Celsius scale the same as the Fahrenheit scale?
2) The body temperature of a healthy human is 98.6°F. Express this in degrees Celsius.
1) The height of a column of mercury in a thermometer when placed in hot water
____ a) rises immediately
____ b) descends slightly and then rises
____ c) rises and then descends slightly
____ d) descends immediately
____ a) it expands
____ b) it remains the same
____ c) it contracts
____ d) it expands non-uniformly
____ e) it contracts non-uniformly
____ a) curve upward.
____ b) curve downward.
____ c) remain horizontal, but get longer.
____ d) bend in the middle.
____ a) expand only if it takes up more than half the plate’s surface area.
____ b) contract if it takes up less than half the plate’s surface area.
____ c) always contract.
____ d) always expand.
____ a) A temperature warmer than 3°C.
____ b) A temperature less than 3°C.
____ c) A temperature equal to 3°C.
____ d) There is not enough information to determine the answer.
1) The steel bed of a suspension bridge is 200 m long at 20°C. If the extremes of temperature to which it might be exposed are -30°C to +40°C, how much will it contract and expand?
2) Vodka that is “100 proof” is a mixture of half ethyl alcohol and half water (by volume). How much profit per liter will a merchant make if he buys vodka at $10 per liter at 0°C and sells it at $10 per liter at 25°C?
1) According to the ideal gas Law, PV = constant for a given temperature. As a result, an increase in volume corresponds to a decrease in pressure. This happens because the molecules
____ a) collide with each other more frequently.
____ b) move slower on the average.
____ c) strike the container wall less often.
____ d) transfer less energy to the walls of the container each time they strike it.
____ a) Matter is composed of tiny particles called molecules.
____ b) The molecules are in constant motion.
____ c) All molecules have the same size and mass.
____ d) The differences between the solid, liquid, and gaseous states can be attributed to the relative freedom of motion of their respective molecules.
____ a) all of the molecules in a gas have the same average speed.
____ b) all of the molecules in a gas have the same average energy.
____ c) light gas molecules have lower average energies than heavy gas molecules.
____ d) light gas molecules have higher average energies than heavy gas molecules.
____ a) the masses of the molecules increase.
____ b) each molecule loses more kinetic energy when it strikes the wall.
____ c) the molecules are in contact with the wall for a shorter time.
____ d) the molecules have higher average speeds and strike the wall more often.
____ a) strike the container walls more often.
____ b) strike the container walls with higher speeds.
____ c) strike the container walls with greater force.
____ d) have more energy.
1) What is the average translational kinetic energy of molecules in a gas at 37°C?
2) Since refers to the average of the square of the velocity, the square-root of this quantity is called the root-mean-square speed or . If a gas is at 0°C, to what temperature must it be raised to double the rms speed of its molecules?
3) Why does the moon have no atmosphere?