chapter 15
from your finger to the ice.
When you touch a cold piece of ice with your finger, energy flows
from the potato to your finger.
When you touch a hot potato with your finger, energy flows
iron
Which of the following normally warms up fastest when heat is applied?
ice water
Which of these expands when the temperature is lowered?
a piece of ice floats in water.
Which of these is correct?
Celsius and Kelvin
Which temperature scales have equal sized degrees?
Calorie
Which unit represents the most energy?
copper expands more than iron.
when a bimetallic bar made of copper and iron strips is heated, the bar bends toward the iron strip. The reason for this is
expansion.
When most substances are heated, molecules inside move faster and take up more space, resulting in thermal
high specific heat capacity.
A substance that heats up relatively slowly has a
iron.
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
higher temperature, but less internal energy.
Compared to a giant iceberg, a hot cup of coffee has
temperature to an object with a lower temperature.
Heat energy travels from an object with a high
either of these
If you wish to expand the volume of a sample of water at 4°C
300 K
Room temperature on the Kelvin scale is about
kinetic energy.
Temperature is most closely related to molecular
a wide variety of speeds
The air in your room is composed of molecules that have
4.19 joules
The amount of heat needed to raise the temperature of 1 gram of water by 1°C is
small temperature changes.
The specific heat capacity is highest for substances that absorb or release large quantities of heat for correspondingly
little energy to you in spite of their high temperature.
The white-hot sparks from a 4th-of-July-type sparkler that strike your skin transfer
