|
Hint
|
|
Answer
|
|
what is it When two objects in contact reach the same temperature, so there is no net heat flow between them
|
|
thermal equilibrium
|
|
What is the unit for the absolute scale of temperature
|
|
kelvin
|
|
What happens to the Kinetic energy of particles as they cool down
|
|
decreases
|
|
What is the kinetic energy of particles at absolute zero
|
|
zero
|
|
How does cooling down affect the motion of particles
|
|
decrease
|
|
what is the amount of energy needed to raise the temperature of 1 kg of a substance by 1°C
|
|
specific heat capacity
|
|
State the specific heat capacity equation
|
|
Q=mcT
|
|
Do materials with a high specific heat capacity heat up faster than those with a lower specific heat capacity
|
|
no
|
|
How can errors be reduced in determining the specific heat capacity of a metal block
|
|
insulation
|
|
measure maximum temperature reached
|
|
what is the energy required to change the state of 1kg of a substance without changing its temperature
|
|
specific latent heat
|
|
What is the equation for specific latent heat
|
|
Q=ml
|
|
Why doesn't temperature change during a change of state
|
|
all energy used to break or form bonds
|
|
What units are typically used for specific latent heat
|
|
Jkg^-1
|
|
What are the two main types of specific latent heat
|
|
fusion
|
|
|
|
vaporisation
|
|
what is the ideal gas equation
|
|
pV=NkT
|
|
What is the relationship between pressure and temperature of a gas at constant volume
|
|
directly proportional
|
|
List some assumptions about the behaviour of an ideal gas
|
|
large number of molecules
|
|
molecules move randomly and constantly
|
|
volume of molecules negligible compared to volume of container
|
|
collisions are perfectly elastic
|
|
no forces between molecules
|
|
duration of collisions negligible compared to time between collisions
|
|
What happens to the average molecular kinetic energy as temperature increases
|
|
increases
|
|
What is the formula linking average molecular kinetic energy, Boltzmann's constant (k), and temperature (T)
|
|
E=3/2kT
|
|
How does temperature relate to the kinetic energy of gas particles
|
|
proportional
|
|
what is the rate at which energy of all types is radiated by an object in all directions. It is used to classify the actual brightness of stars
|
|
luminosity
|
|
What are the two key factors that determine an object's luminosity
|
|
size
|
|
temperature
|
|
what is an object that emits energy across the entire electromagnetic spectrum, following a specific distribution based on its temperature
|
|
perfect black body
|
|
How does the peak of a black body's emission curve change with increasing temperature
|
|
shifts to shorter wavelengths
|
|
what states that the power output (luminosity) from a black body is proportional to its surface area and the fourth power of its temperature in Kelvin
|
|
Stefan boltzmann law
|
|
How does the total energy radiated by a black body change with temperature
|
|
increases
|
|
what states that the wavelength of the peak radiation emitted by a black body is inversely proportional to its temperature
|
|
wiens displacement law
|
|
What happens to the peak wavelength of a black body as its temperature increases
|
|
decreases
|
