CHAPTER 8 Flashcards
(31 cards)
The unit of heat in the SI system is the:
Select one:
A.
Horse power (hp)
B.
Volt (V)
C.
Watt (W)
D.
Joule (J)
E.
Newton (N)
D.
Joule (J)
The transfer of thermal energy usually applicable to solids from molecule to molecule is called:
Select one:
A.
Exothermic
B.
Conduction
C.
Radiation
D.
Endothermic
E.
Convection
B.
Conduction
The standard _____ is used to obtain Relative Density when comparing other solids and liquids.
Select one:
A.
Air
B.
Carbon dioxide
C.
Water
D.
Alcohol
E.
Oil
C.
Water
The units of temperature measurement are degrees in the SI system the scale used for normal measurement is:
Select one:
A.
Kelvin
B.
Rankin
C.
Celsius
D.
Fahrenheit
E.
Absolute
C.
Celsius
The transfer of thermal energy in straight lines not affected by gases or wind movement and heats the objects struck is termed:
Select one:
A.
Conduction
B.
Radiation
C.
Convection
D.
Endothermic
E.
Exothermic
B.
Radiation
The heat that is added to or removed from a substance and causes the substances temperature to change is called:
Select one:
A.
Latent heat
B.
Entropy
C.
Sensible heat
D.
Enthalpy
E.
Super temperature
C.
Sensible heat
The specific heat of ice is equal to:
Select one:
A.
2257 kJ/kg
B.
4.183 kJ/kg/°C
C.
2.135 kJ/kg/°C
D.
2.093 kJ/kg/°C
E.
335 kJ/kg
C.
2.135 kJ/kg/°C
The heat that is added to or removed from a substance and causes a change in state of a substance is called:
Select one:
A.
Sensible heat
B.
Enthalpy
C.
Super temperature
D.
Latent heat
E.
Entropy
.
Latent heat
The Fahrenheit scale considers the boiling point of water to be:
Select one:
A.
32°
B.
0°
C.
200°
D.
212°
E.
100°
D.
212°
The term used to describe the solid-to-fluid change of state during the addition of heat is:
Select one:
A.
Latent heat of plasma
B.
Latent heat of solidification
C.
Latent heat of evaporation
D.
Latent heat of condensation
E.
Latent heat of fusion
E.
Latent heat of fusion
On the Kelvin scale 0 K (absolute zero) is equal to _____ on the Celsius scale.
Select one:
A.
0°
B.
-273°
C.
-32°
D.
212°
E.
-460°
B.
-273°
The term used to describe the fluid-to-gas change of state during the addition of heat is:
Select one:
A.
Latent heat of fusion
B.
Latent heat of solidification
C.
Latent heat of condensation
D.
Latent heat of plasma
E.
Latent heat of evaporation
E.
Latent heat of evaporation
The term used to describe the fluid-to-solid change of state during the extraction of heat is:
Select one:
A.
Latent heat of condensation
B.
Latent heat of evaporation
C.
Latent heat of solidification
D.
Latent heat of plasma
E.
Latent heat of fusion
C.
Latent heat of solidification
As heat is added to a liquid its temperature will:
Select one:
A.
Remain unchanged
B.
Increase continually
C.
Decrease continually
D.
Remain constant during a phase change
E.
Remain the same
D.
Remain constant during a phase change
The Celsius scale considers the melting point of ice to be:
Select one:
A.
0°
B.
32°
C.
200°
D.
212°
E.
100°
A.
0°
The term used to describe the gas-to-fluid change of state during the extraction of heat is:
Select one:
A.
Latent heat of plasma
B.
Latent heat of solidification
C.
Latent heat of fusion
D.
Latent heat of condensation
E.
Latent heat of evaporation
D.
Latent heat of condensation
The amount of length increase of a material depends on the:
Select one:
A.
Method of construction
B.
Atmospheric pressure
C.
Relative humidity
D.
Temperature change
E.
Length of time exposed
D.
Temperature change
Specific heat can be defined as the amount of heat required to raise 1 kg of a substance:
Select one:
A.
1°R
B.
10°F
C.
1°F
D.
10°C
E.
1°C
E.
1°C
As the temperature of water drops to below 4°C:
Select one:
A.
Ice begins to form
B.
Its density remains unchanged
C.
It gains thermal energy
D.
It contracts
E.
It begins to expand
E.
It begins to expand
Thermodynamics can be defined as the:
Select one:
A.
Movement of temperature
B.
Change of heat
C.
Movement of heat
D.
Movement of energy
E.
Change of temperature
C.
Movement of heat
The specific heat of water is equal to:
Select one:
A.
2.135 kJ/kg/°C
B.
335 kJ/kg
C.
4.183 kJ/kg/°C
D.
2257 kJ/kg
E.
2.093 kJ/kg/°C
C.
4.183 kJ/kg/°C
All substances - whether solid, liquid or gas - as heat is added or absorbed will:
Select one:
A.
Loose thermal energy
B.
Contract
C.
Expand
D.
Drop in temperature
E.
Change state
C.
Expand
Heat will only move in:
Select one:
A.
One direction-from a high to a lower temperature
B.
From cold to hot
C.
One direction-from a low to a higher temperature
D.
From hot to hotter
E.
Both directions high to low and low to high temperature
A.
One direction-from a high to a lower temperature
The latent heat of evaporation of water is equal to:
Select one:
A.
335 kJ/kg
B.
2257 kJ/kg
C.
2.135 kJ/kg/°C
D.
2.093 kJ/kg/°C
E.
4.183 kJ/kg/°C
B.
2257 kJ/kg
