Physics Ch. 15
Terms in this set (38)
The temperature of absolute zero is stated as _______.
-273 degrees C
What are the temperatures for freezing water and boiling water on the Kelvin temperature scale?
273K for freezing water; 373K for boiling water
Which defines temperature - translational kinetic energy, rotational kinetic energy, vibrational kinetic energy, or all of these?
translational kinetic energy
Which of these cites the lowest temperature?
When we speak about heat, we refer to _______.
energy in transit
The amount of heat needed to raise the temperature of 1 gram of water by 1°C is _______.
Does a substance that heats up quickly have a high or a low specific heat capacity?
low specific heat capacity
Which of these has the highest specific heat capacity?
If a certain material heats up quickly and cools down quickly, the material has _______.
a low specific heat
Hot sand cools off faster at night than do plants and vegetation. This indicates that the specific heat capacity for sand is _______.
less than that of plants
Water is most dense at _______.
When the temperature of a strip of iron is increased, the length of the strip _______.
When an iron ring is heated, the hole becomes
Ice tends to form first at the
surface of bodies of water.
In a glass of water at room temperature, do all the molecules have the same speed?
When you touch a cold piece of ice with your finger, energy flows
from your finger to the ice.
A substance that heats up relatively quickly has a
low specific heat.
A temperature difference of 10 degrees Celsius is also equal to a temperature difference of 10 on the
The fact that desert sand is very hot in the day and very cold at night is evidence that sand has
a low specific heat.
Pour a liter of water at 40 degrees C into a liter of water at 20 degrees C and the final temperature of the two becomes
at or about 30 degrees C.
Heat energy is measured in units of
Choices A and B are both true; joules and calories.
As a piece of metal with a hole in it cools, the diameter of the hole
During a very cold winter, water pipes sometimes burst. The reason for this is
water expands when freezing.
Which is the largest unit of heat transfer-Calorie, calorie, or joule?
Which is greater-an increase in temperature of 1 Celsius degree or an increase of 1 Fahrenheit degree?
an increase of 1 degree C is larger
Consider a sample of water at 0 degrees C. If the temperature is slightly increased, the volume of the water
Microscopic slush in water tends to make the water density
Before ice can form on a lake, all the water in the lake must be cooled to
4 degrees C.
Which of the following expands when the temperature is lowered? Equal volumes of
water at 4 degrees C.
Consider a closed, sealed can of air placed on a hot stove. The contained air undergoes an increase in
two of these; pressure and temperature.
The moderate temperatures of islands throughout the world has much to do with water's
high specific heat.
When water at 4 degrees C is heated it expands. When water at 4 degrees C is cooled, it
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 greater increase in temperature will be
The white-hot sparks that strike your skin from a 4th-of-July-type sparkler don't harm you because
the energy per molecule is high, but little energy is transferred because of the few molecules in the spark.
Some molecules are able to absorb large amounts of energy in the form of internal vibrations and rotations. Materials composed of such molecules have
high specific heats.
Ice has a lower density than water because ice
is made of open-structured, hexagonal crystals.
Which of the following contracts when the temperature is increased? Equal volumes of
When a bimetallic bar made of copper and iron strips is heated, the bar bends toward the iron strip. The reason for this is
copper expands more than iron.