This section covers the following syllabus (Physics 5059) requirements.
recall and apply the relationship power = work done / time taken to new situations or to solve related problems
calculate the efficiency of an energy conversion using the formula efficiency = energy converted to useful output / total energy input
This section covers the following syllabus (Physics 5059) requirements.
define the term pressure in terms of force and area
recall and apply the relationship pressure = force / area to new situations or to solve related problems
recall and apply the relationship pressure due to a liquid column = height of column × density of the liquid × gravitational field strength to new situations or to solve related problems
This section covers the following syllabus (Physics 5059) requirements.
describe and explain the transmission of pressure in hydraulic systems with particular reference to the hydraulic press
This section covers the following syllabus (Physics 5059) requirements.
describe how the height of a liquid column may be used to measure the atmospheric pressure
This section covers the following syllabus (Physics 5059) requirements.
describe the use of a manometer in the measurement of pressure difference
This section covers the following syllabus (Physics 5059) requirements.
explain how a physical property which varies with temperature, such as volume of liquid column, resistance of metal wire and electromotive force (e.m.f.) produced by junctions formed with wires of two different metals, may be used to define temperature scales
This section covers the following syllabus (Physics 5059) requirements.
describe the process of calibration of a liquid-in-glass thermometer, including the need for fixed points such as the ice point and steam point
This section covers the following syllabus (Physics 5059) requirements.
explain how a physical property which varies with temperature, such as volume of liquid column, resistance of metal wire and electromotive force (e.m.f.) produced by junctions formed with wires of two different metals, may be used to define temperature scales.
This section covers the following syllabus (Physics 5059) requirements.
compare the properties of solids, liquids and gases
describe qualitatively the molecular structure of solids, liquids and gases, relating their properties to the forces and distances between molecules and to the motion of the molecules
This section covers the following syllabus (Physics 5059) requirements.
infer from Brownian motion experiment the evidence for the movement of molecules
describe the relationship between the motion of molecules and temperature
This section covers the following syllabus (Physics 5059) requirements.
explain the pressure of a gas in terms of the motion of its molecules
recall and explain the following relationships using the kinetic model (stating of the corresponding gas laws is not required):
(i) a change in pressure of a fixed mass of gas at constant volume is caused by a change in temperature of the gas
(ii) a change in volume occupied by a fixed mass of gas at constant pressure is caused by a change in temperature of the gas
(iii) a change in pressure of a fixed mass of gas at constant temperature is caused by a change in volume of the gas
use the relationships in (f) in related situations and to solve problems (a qualitative treatment would suffice)
This section covers the following syllabus (Physics 5059) requirements.
show understanding that thermal energy is transferred from a region of higher temperature to a region of lower temperature
describe, in molecular terms, how energy transfer occurs in solids
apply the concept of thermal energy transfer (conduction) to everyday applications
This section covers the following syllabus (Physics 5059) requirements.
describe, in terms of density changes, convection in fluids
apply the concept of thermal energy transfer (convection) to everyday applications
This section covers the following syllabus (Physics 5059) requirements.
explain that energy transfer of a body by radiation does not require a material medium and the rate of energy transfer is affected by:
(i) colour and texture of the surface
(ii) surface temperature
(iii) surface area
apply the concept of thermal energy transfer (radiation) to everyday applications
This section covers the following syllabus (Physics 5059) requirements.
describe a rise in temperature of a body in terms of an increase in its internal energy (random thermal energy)
This section covers the following syllabus (Physics 5059) requirements.
define the terms latent heat and specific latent heat
recall and apply the relationship thermal energy = mass × specific latent heat to new situations or to solve related problems
This section covers the following syllabus (Physics 5059) requirements.
describe melting/solidification and boiling/condensation as processes of energy transfer without a change in temperature
sketch and interpret a cooling curve
This section covers the following syllabus (Physics 5059) requirements.
explain the difference between boiling and evaporation
