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Worksheetsunit 1 Heat Theory
Total questions: 26
Worksheet time: 1hrs 18mins
The human body gives off heat by which of the following?
convection
radiation
conduction
all of the above
Temperature is an indication of the ____.
amount of heat in a material
density of the material
amount of molecular activity in the material
weight of the total mass of the material
At sea level on the Fahrenheit scale, water will boil at ____.
100°F
212°F
32°F
0°F
Pure water boils at a temperature of 212°F at which of the following standard conditions at sea level?
12.7psia
13.7psia
14.7psia
15.7psia
As the temperature of a material increases, the molecules in the material ____.
travel farther
travel faster
slow down
travel in more of a parallel direction
PSIG indicates ____.
pounds per square inch absolute gravity
pounds per square inch gauge
pounds per square inch of pressure absolute
pounds per square inch of gravity
The amount of heat needed to change the temperature of a substance will vary with the type of substance. This heat quality is called the ____ of the substance.
sensible heat
specific heat
latent heat
relative heat
A Bourdon tube is often found in a ____.
mercury barometer
aneroid barometer
pressure gauge
mercury thermometer
In order for water at 60°F to reach boiling point and begin to boil at sea level, it must absorb __________________heat.
sensible
super
specific
both sensible and latent
When water at 212°F boils, it is only absorbing latent heat.
True
False
Both sensible heat and latent heat transfers can be read with a thermometer.
True
False
Water will begin to boil, at sea level, at 212°Centigrade.
True
False
Water at 0°Fahrenheit has no heat energy or molecular activity.
True
False
Temperature difference does not affect heat transfer rate.
True
False
The difference in the volume of two substances will determine the heat transfer rate between the substances.
True
False
The difference in the level of heat between two substances will determine the heat transfer rate between the substances.
True
False
Regardless if water is in a solid, liquid, or vapor state, the heat per pound to change the temperature of the water is the same.
True
False
The two common temperature scales used by air conditioning and refrigeration technicians are called ____________________ and ____________________.
Fahrenheit, Celsius
Centigrade, Celsius
Celsius, Franklin
Burette, Hypothesis
Heat that changes the temperature of a substance is called ____________________ heat.
superheat
subcooling
sensible
latent
Heat that causes a substance to change form is called ____________________ heat..
super
subcool
sensible
latent
PSIA at sea level under standard conditions is ____________________.
14.696 psia
146.96 psia
1.4696 psia
1469.6 psia
The heat energy needed to raise the temperature of vapor above its saturation point is called ____________________.
superheat
subcooling
sensible heat
specific heat
A BTU is_____________________
The heat energy required to raise one pound of water from 0 degrees Fahrenheit to 100 degrees Fahrenheit.
The heat energy required to raise one pound of water from 0 degrees Fahrenheit to 212 degrees Fahrenheit.
The heat energy required to raise one pound of water one degree Fahrenheit.
The heat energy required to raise one gallon of water one degree Fahrenheit
An example of transfer of heat by conduction would be_______________.
touching a 300 degree piece of steel with your hand
wearing safety glasses
tanning
wear a down filled coat
An example of heat transfer by convection is ___________.
burning yourself by picking up a hot pan off the stove
drinking a cold soda
using a hair dryer
tanning
An example of heat transfer by radiation would be ________________.
picking up a hot piece of copper
drinking a cold soda
using a hairdryer
tanning
