WorksheetsHeat Science Quiz CHAPTER 2
Total questions: 42
Worksheet time: 11hrs 30mins
For chemical reactions to take place, heat must be added or removed from a substance.
TRUE
FALSE
The type of thermometer and temperature probe required for a specific measurement depends on factors such as the range of temperatures to be measured and accuracy required.
TRUE
FALES
The Kelvin scale uses the same degree incrementation as the Fahrenheit scale.
TRUE
FALSE
All substances do not have the same capacity for heat.
TRUE
FALSE
To determine the quantity of sensible heat required to raise or lower the temperature of any substance, it is necessary to know the specific heat value, mass, and the number of degrees of temperature change.
TRUE
FALSE
The second law of thermodynamics states that energy cannot be created or destroyed but can be changed from one form to another.
TRUE
FALSE
Radiation does not require a medium between two objects for heat transfer to take place.
TRUE
FALSE
In general, solids dissolved in a liquid lower the boiling point; gases dissolved in a liquid usually raise the boiling point.
TRUE
FALSE
In most substances, thermal expansion happens as a substance is heated up to and above its boiling point.
TRUE
FALSE
Saturated steam will be at the same temperature as the boiling temperature of water.
TRUE
FALSE
At the saturated temperature, the fluid may exist as a liquid or a gas.
TRUE
FALSE
Only steam that is not in contact with water can be superheated.
TRUE
FALSE
A(n) ___ thermometer measures temperature by the expansion or contraction of the liquid in the stem.
flexible capillary type dial
liquid-in-glass
infrared
bimetal
When using a ___ thermometer, temperature is measured by the movement in the bimetal strip or coil caused by a change in temperature.
thermocouple
thermistor
bimetal
flexible capillary type dial
A(n) ___ thermometer operates on the principle that resistance to flow of electric current will increase as the temperature of the conducting wire increases.
bimetal
infrared
thermocouple
thermistor
A(n) ___ is used for noncontact temperature measurement.
thermistor
infrared
thermocouple
bimetal
The ___ temperature scale is based on a 180° degree separation between the melting and boiling points of water, with fixed points at 32° and 212°.
Rankine
Celsius
Fahrenheit
Kelvin
The ___ temperature scale is based on a 100° degree separation between the freezing and boiling points of water, with fixed points at 0° and 100°.
Fahrenheit
Celsius
Rankine
Kelvin
The formula for converting Celsius to Fahrenheit is Celsius = ___.
(Fahrenheit Ã- 9/5) + 32
(32 - Fahrenheit) + 5/9
(9/5 Ã- 32) + Fahrenheit
(Fahrenheit - 32) Ã- 5/9
A ___ is used to measure the quantity of heat.
slug
joule (J)
British thermal unit (BTU)
calorie (cal)
The rate at which material conducts heat is dependent upon the ___ of the material.
specific heat
thermal conductivity rating
boiling point
melting point
In ___, the transfer of heat is a result of a difference in temperature between two objects or substances in direct physical contact.
natural convection
conduction
radiation
forced convection
___ occurs because of a combination of heat transfer by conduction and heat transfer by actual movement of some of the fluid from one place to another.
Radiation
Latent heat
Natural convection
Forced convection
___ uses fans and blowers to create air movement when systems require a relatively immediate heat transfer to take place.
Conduction
Radiation
Natural convection
Forced convection
___ is when the substance continues to absorb or remove heat without a change in temperature until it has absorbed or removed enough heat to change state.
Specific heat
Intensity of heat
Latent heat
Sensible heat
Upon absorbing a sufficient quantity of latent heat of fusion, the solid will reach its ___ point and change state to a liquid.
boiling
melting
saturation
evaporation
An example of ___ is the formation of water on the outside of a glass of ice water in summer.
saturation
vaporization
superheated steam
condensation
An example of ___ is when water, under pressure, is released from a steam boiler to atmosphere during boiler blow down operations.
evaporation
condensation
flashing
saturation
The operation of a cooling tower is an example of ___.
condensation
flashing
saturation
evaporation
Wet saturated steam contains a moisture content of more than ___.
0.75%
1%
1.5%
2%
The ___ of steam is the amount of BTU required to raise the temperature of 1 lb of water from 32°F to the corresponding boiling point and to change this water to saturated steam.
latent heat
total heat
sensible heat
saturation temperature
To calculate the values for a given weight of water or saturated steam, it is necessary to ___.
multiply the saturated steam table value by the weight of the water
add the saturated steam table value to the weight of the water
divide the weight of the water by the saturated steam table value
subtract the saturated steam table value from the weight of the water
___ causes changes in temperature that can be measured.
SENSIBLE HEAT
TEMPERATURE
SPECIFIC HEAT
LATENT HEAT
___ is an indirect measure of the velocity attained by the molecules in a substance.
SPECIFIC HEAT
THERMODYNAMICS
SATURATION
TEMPERATURE
___ is the velocity attained by the molecules in a substance indirectly measured by temperature.
BTU
PRESSURE
INTENSITY OF HEAT
STEAM
The ___ of a substance is a ratio of the heat capacity of the substance to the heat capacity of pure water.
THERMODYNAMICS
SENSIBLE HEAT
SPECIFIC HEAT
LATENT HEAT
___ is the science of thermal energy (heat) and how it transforms to and from other forms of energy.
SUPERHEAT
EVAPORATION
THERMODYNAMICS
The ___ is the type of heat involved with changes between the liquid and gas/vapor state.
LATENT HEAT OF VAPORIZATION
SPICIFIC HEAT
SATURATION
SENSIBLE HEAT
___ is a given phase containing the highest concentration of molecules of a certain substance that it can hold before it changes state.
SUPERHEATED
STEAM
PRESSURE POINT
SATURATION POINT
___ is when a gas or vapor is heated to a temperature higher than its boiling point.
SENSIBLE HEAT
LATENT HEAT
SUPERHEATED
SUBCOOLED
___ is the vapor that forms when water is heated to its boiling point at ( 1 atm) at 212°F.
SUPERHEAT
LATENT HEAT
HEAT INTENSITY
STEAM
For any given substance, the temperature at which a change of state occurs will depend upon the ___ being exerted on the substance.
INTENSITY OF HEAT
SPECIFIC HEAT
PRESSURE
FLAME
