8K Energy Transfer
what is internal energy
The Energy stored in the movement of particles
8K Energy Transfer
what are Energy measured in
Joules (J)
8K Energy Transfer
What is Temperature and its unit of measurement
something that describes how hot or cold something is Degrees Celsius (°C)
8K Energy Transfer
Are internal energy and temperature the same and why
No, because the temperature is measurable using thermometers, but the internal energy something contained cannot
8K Energy Transfer
what are the 3 factors the amount of internal energy in something depends on
Temperature
Material
Mass
8K Energy Transfer
How does the Energy flow
from hotter objects to a cooler one
8K Energy Transfer
The bigger the difference in temperature the ____ the energy is transferred
Faster
8K Energy Transfer
what happens to cold and hot objects (During energy transfer)
cold objects become hotter and vice versa until they are both same temperature
8K Energy Transfer
what happens to particles when a liquid Evaporates
the fastest moving particles in a liquid escape forming gas the particles that are left store less energy as movement so the temperature of the remaining liquid is lower
8K Energy Transfer
what are the 4 ways energy can be transferred by heating
Evaporation
Radiation
Conduction
Convection
8K Energy Transfer
how is energy transferred through radiation and what state could this happen through
Energy is transferred through radiation via electromagnetic waves This type of energy transfer doesn’t require a medium and can happen in all states of matter
8K Energy Transfer
how is energy transferred through Conduction and what state could this happen through
Energy is transferred through conduction within all 3 states when one particle gains energy it passes it to surrounding particles through collisions.
8K Energy Transfer
how is energy transferred through Convection and what state could this happen through
Energy is transferred through convection by the movement of the fluids due to temperature differences. Warm fluid rises, and cooler fluid sinks, creating a cycle.
8K Energy Transfer
2 ways to insulate the cold in houses
Double Glazed Windows
Dark coloured coating
8K Energy Transfer
2 ways to insulate the heat in houses
light coloured coating
windows
8K Energy Transfer
give an example insulator
wood
8K Energy Transfer
give an example conductor
metal
8K Energy Transfer
define Accuracy
close to the true value of the thing being measured
8K Energy Transfer
define Precision
several measurement results are close together
8K Energy Transfer
define Random Errors
Errors formed due to factors that are difficult to control
8K Energy Transfer
define Systematic Errors
all results from the instrument are incorrect by a similar amount
8K Energy Transfer
how could you avoid Systematic Errors
Adjust instruments and use proper measurement techniques.
8K Energy Transfer
how could you avoid Random errors
Take multiple measurements and average the results.
8K Energy Transfer
define power and the 2 units its measured in
the amount of energy transferred per second watts (W)
Kilowatts (KW)
