Quiz 15

If you measure the width of an outdoor barn with a steel tape on a very cold day, your measured width will be a. a bit short. b. a bit long. c. the same as on an average-temperature day.

b. a bit long.

When you touch a hot potato with your finger, energy flows a. from your finger to the potato. b. from the potato to your finger. c. actually, both ways.

b. from the potato to your finger.

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. higher temperature, but less internal energy.

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. the tomato sauce feels hotter than the dough.

The fact that gasoline overflows a full tank on a hot day is evidence that a. gasoline expands more with increasing temperature than its tank. b. the tank contracts while gasoline expands with temperature. c. both of these d. neither of these

a. gasoline expands more with increasing temperature than its tank.

A substance that heats up relatively slowly has a a. high specific heat capacity. b. low specific heat capacity. c. either of these d. neither of these

a. high specific heat capacity.

One of water's interesting thermal properties is that when heated it takes a relatively a. long time in changing temperature. b. short time in changing temperature. c. same amount of time to cool. d. none of the above

a. long time in changing temperature.

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. surface of bodies of water.

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. copper expands more than iron.

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. all of the above