AQA A Level Physics - Thermal Physics REAL EXAM ACCURATE
QUESTIONS WITH 100% RATED CORRECT ANSWERS EXPERT
VERIFIED GET IT A+ 2025 LATEST UPDATED
What is the definition of internal energy? - (ANSWER)The sum of the RANDOMLY
distributed kinetic energies and potential energies of the particles in a body
When does internal energy increase? - (ANSWER)There is work done on the object
There is energy transfer by heating the object
When do energy transfers between two objects take place? - (ANSWER)1. One object does
WORK one the other object 心的坚强决定了我们的命运。当
我们面对挫折时，是一颗不屈的
2. One object is HOTTER than the心让我们勇敢前行
other object, so energy transfer by heating takes place by
means of conduction, convection or radiation
What is the first law of thermodynamics? - (ANSWER)The change of internal energy of the
object = the total energy transfer due to work done and heating
What is temperature? - (ANSWER)Temperature is a measure of the degree of hotness of an
object.
The hotter the object is, the more internal energy it has
What are the two scales of temperature? - (ANSWER)Celsius
Kelvin
, What is Celsius defined in terms of? - (ANSWER)1. Ice point (0)
2. Steam point (100)
What is Kelvins defined in terms of? - (ANSWER)1. Absolute zero (0)
2. Triple point of water (273.16), which is the temperature at which ice, water and steam coexist
in thermodynamic equilibrium
What is absolute zero? - (ANSWER)Absolute zero is the lowest possible temperature.
What are the properties of an object at absolute zero? - (ANSWER)KE = 0
Pressure and volume = 0
心的坚强决定了我们的命运。当
MINIMUM internal energy 我们面对挫折时，是一颗不屈的
心让我们勇敢前行
What are temperature scales defined in terms of? - (ANSWER)A temperature scale is defined in
terms of fixed points.
These are standard degrees of hotness which can EASILY be accurately reproduced
Describe the molecules in a solid - (ANSWER)Molecules vibrate randomly about FIXED
positions
Atoms and molecules held to each other by FORCES due to the electrical charges of the protons
and electrons in the atoms
Why do molecules vibrate more at a higher temperature? - (ANSWER)They have more kinetic
energy
QUESTIONS WITH 100% RATED CORRECT ANSWERS EXPERT
VERIFIED GET IT A+ 2025 LATEST UPDATED
What is the definition of internal energy? - (ANSWER)The sum of the RANDOMLY
distributed kinetic energies and potential energies of the particles in a body
When does internal energy increase? - (ANSWER)There is work done on the object
There is energy transfer by heating the object
When do energy transfers between two objects take place? - (ANSWER)1. One object does
WORK one the other object 心的坚强决定了我们的命运。当
我们面对挫折时，是一颗不屈的
2. One object is HOTTER than the心让我们勇敢前行
other object, so energy transfer by heating takes place by
means of conduction, convection or radiation
What is the first law of thermodynamics? - (ANSWER)The change of internal energy of the
object = the total energy transfer due to work done and heating
What is temperature? - (ANSWER)Temperature is a measure of the degree of hotness of an
object.
The hotter the object is, the more internal energy it has
What are the two scales of temperature? - (ANSWER)Celsius
Kelvin
, What is Celsius defined in terms of? - (ANSWER)1. Ice point (0)
2. Steam point (100)
What is Kelvins defined in terms of? - (ANSWER)1. Absolute zero (0)
2. Triple point of water (273.16), which is the temperature at which ice, water and steam coexist
in thermodynamic equilibrium
What is absolute zero? - (ANSWER)Absolute zero is the lowest possible temperature.
What are the properties of an object at absolute zero? - (ANSWER)KE = 0
Pressure and volume = 0
心的坚强决定了我们的命运。当
MINIMUM internal energy 我们面对挫折时，是一颗不屈的
心让我们勇敢前行
What are temperature scales defined in terms of? - (ANSWER)A temperature scale is defined in
terms of fixed points.
These are standard degrees of hotness which can EASILY be accurately reproduced
Describe the molecules in a solid - (ANSWER)Molecules vibrate randomly about FIXED
positions
Atoms and molecules held to each other by FORCES due to the electrical charges of the protons
and electrons in the atoms
Why do molecules vibrate more at a higher temperature? - (ANSWER)They have more kinetic
energy
