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Energy changes in a system, and the ways energy is stored before and after such changes key terms
Study Energy changes in a system, and the ways energy is stored before and after such changes with curriculum-aligned Key Terms resources, practice links, and exam-focused support.
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key terms
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Energy changes in a system, and the ways energy is stored before and after such changes
Key terms
system
A group of objects or a single object that is considered together for the purpose of analysing energy changes.
energy store
A form of energy that is held within a system, such as kinetic, potential, or thermal energy.
energy storage
The method by which energy is retained in a system, which can change during physical transformations.
physical system
An object or a group of objects considered together in the context of energy changes.
energy-store
A form of energy that is stored in a system, which can change during physical processes.
projected object
An object that is thrown or propelled into the air, experiencing changes in energy stores as it moves.
energy-store
A form of energy that is stored in a system, which can change during physical processes.
obstacle
An object that a moving object can collide with, resulting in changes to energy stores.
energy-store
A form of energy that is stored in a system, which can change when the system undergoes physical changes.
constant force
A force that does not change in magnitude or direction, applied to an object to accelerate it.
energy-store
A form of energy that is stored in a system, which can change during physical processes.
kinetic energy
The energy possessed by an object due to its motion, which can change when a vehicle slows down.
energy-store
A form of energy that is stored in a system, which can change during physical processes.
boiling point
The temperature at which water changes from liquid to gas, typically 100°C at standard atmospheric pressure.
system
An object or a group of objects being considered together.
heating
The process of transferring energy to increase the temperature of a system.
work done
The energy transferred when a force is applied to move an object over a distance.
system
An object or a group of objects being considered together in the context of energy changes.
work done
The energy transferred when a force is applied to move an object over a distance.
current flow
The movement of electric charge through a conductor, typically measured in amperes.
Energy redistribution
The process by which energy moves from one energy store to another within a system, keeping the total energy constant.
Common scale comparison
A method of expressing different energy changes in the same units, such as joules, to allow direct comparison of their magnitudes.
energy transfer
The process of energy moving from one place or form to another.
electrical work
The work done when an electric current flows through a circuit, resulting in energy transfer.
kinetic energy
The energy possessed by an object due to its motion, calculated using the formula Ek = 0.5 x m x v^2.
mass
The quantity of matter in an object, measured in kilograms (kg), which is a factor in calculating kinetic energy.
kinetic energy
The energy an object possesses due to its motion, calculated using the equation Ek = 0.5 x m x v^2.
mass
The amount of matter in an object, typically measured in kilograms, which is a variable in the kinetic energy equation.
kinetic energy
The energy possessed by an object due to its motion, measured in joules.
mass
The amount of matter in an object, measured in kilograms.
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