ch 15 phy
A body of water will be deeper when its A) temperature rises. B) temperature drops. C) neither of these
A
A substance that cools down faster than others has a A) low specific heat capacity. B) high specific heat capacity. C) either of these D) neither of these
A
Aluminum has a specific heat capacity more than twice that of copper. Place equal masses of aluminum and copper wire in a flame and the one to undergo the fastest increase in temperature will be A) copper. B) aluminum. C) both the same
A
Ice tends to form first at the A) surface of bodies of water. B) bottom of bodies of water. C) either depending on water depth.
A
If the specific heat capacity of water were lower than it is, a nice hot bath would be a A) shorter experience. B) longer experience. C) same regardless of water's specific heat capacity.
A
If the temperature of a sample of water at 4°C is slightly increased, its volume A) increases. B) decreases. C) remains the same.
A
If the temperature of a sample of water at 4°C is slightly lowered, its volume A) increases. B) decreases. C) remains the same.
A
Open spaces in ice crystals contribute to A) decreased density. B) increased density. C) neither of these
A
Place a 1-kilogram block of iron at 40°C into 1 kilogram of water at 20°C and the final temperature of the two becomes A) less than 30°C. B) at or about 30°C. C) more than 30°C.
A
The specific heat capacity is highest for substances that absorb or release large quantities of heat for correspondingly A) small temperature changes. B) large temperature changes. C) small or large changes in temperature. D) none of the above
A
When you touch a cold piece of ice with your finger, energy flows A) from your finger to the ice. B) from the ice to your finger. C) actually, both ways.
A
Which temperature scale has the smallest sized degrees? A) Fahrenheit B) Celsius C) Kelvin D) none of the above
A
Aluminum has a higher specific heat capacity than iron. This means that for equal masses of aluminum and iron, the metal that heats more quickly when the same amount of heat is applied is A) aluminum. B) iron. C) need more information
B
Before ice can form on a lake, all the water in the lake must be cooled to A) zero°C. B) 4°C. C) -32°C. D) none of the above
B
Compared to a giant iceberg, a hot cup of coffee has A) more internal energy and higher temperature. B) higher temperature, but less internal energy. C) a greater specific heat and more internal energy. D) none of the above
B
If the temperature of a sample of water at 0°C is slightly increased, its volume A) increases. B) decreases. C) remains the same.
B
In terms of thermal expansion it is important that A) a key and its lock are made of similar or the same material. B) the fillings in your teeth expand at the same rate as teeth. C) iron rods and concrete in which they're embedded expand equally. D) all of the above E) none of the above
B
Internal energy is greater in a A) cup of boiling-hot tea. B) fire-engine pail of boiling-hot tea. C) both the same
B
It is important that the two metals that compose a bimetallic strip have A) different conductivities. B) different rates of expansion. C) equal thicknesses. D) all of the above E) none of the above
B
Pour a liter of water at 40°C into a liter of water at 20°C and the final temperature of the two becomes A) less than 30°C. B) at or about 30°C. C) more than 30°C.
B
Tomatoes have a higher specific heat capacity than dough. This means that when you bite into a hot pizza A) the dough feels hotter than the tomato sauce. B) the tomato sauce feels hotter than the dough. C) since sauce and dough are at the same temperature, neither feels hotter.
B
When most substances are heated, molecules inside move faster and take up more space, resulting in thermal A) bending. B) expansion. C) contraction. D) heat.
B
Which unit represents the most energy? A) calorie B) Calorie C) joule D) all the same
B
A substance with a high thermal inertia has a high A) temperature, in many cases. B) heat conductivity. C) specific heat capacity. D) energy content.
C
Heat energy is measured in units of A) joules. B) calories. C) both of these D) neither of these
C
Pour two liters of water at 40°C into one liter of water at 20°C and the final temperature of the two becomes A) less than 30°C. B) at or about 30°C. C) more than 30°C.
C
Translational motion is characterized by A) motion that carries a molecule from one place to another. B) the motion used in measuring temperature. C) both of these D) neither of these
C
When 10 grams of hot water cool by 1°C, the amount of heat given off is A) 41.9 calories. B) 41.9 Calories. C) 41.9 joules. D) more than 41.9 joules. E) none of the above
C
When a bimetallic bar made of copper and iron strips is heated, the bar bends toward the iron strip. The reason for this is A) iron gets hotter before copper. B) copper gets hotter before iron. C) copper expands more than iron. D) iron expands more than copper. E) none of the above
C
When ice water at 0°C is heated A) thermal expansion occurs. B) thermal contraction occurs. C) both occur until 4°C is reached
C
Which of these expands when the temperature is lowered? A) iron B) wood C) ice water D) helium E) none of the above
C
Which of these is correct? A) a piece of solid iron floats in molten iron. B) a piece of solid aluminum floats in molten aluminum. C) a piece of ice floats in water. D) all the above E) none of the above
C
Which temperature scales have equal sized degrees? A) Fahrenheit and Celsius B) Fahrenheit and Kelvin C) Celsius and Kelvin D) none of the above
C
The quantity of heat that a substance can transfer relates to its A) mass B) specific heat capacity C) change in its temperature. D) all of the above
D
White-hot sparks from a 4th-of-July-type sparkler that strike your skin have relatively A) high temperatures. B) few molecules per spark. C) low transfer of energy. D) all of the above E) none of the above
D
