Study resource
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.
At a glance
key terms
Resource type
Topic
Energy changes in a system, and the ways energy is stored before and after such changes
Key terms
specific heat capacity
The energy needed to raise the temperature of one kilogram of a substance by one degree Celsius.
required practical
An experimental activity designed to investigate a scientific concept or principle.
Thermal energy
The internal energy of a material that increases when heat is supplied, measured in joules.
Energy transfer
The movement of energy from one energy store or system to another, such as from potential or kinetic energy to thermal energy.
specific heat capacity
The energy needed to raise the temperature of one kilogram of a substance by one degree Celsius.
temperature change
The difference in temperature of a substance before and after energy is supplied.
Specific heat capacity
The amount of energy required to raise the temperature of one kilogram of a substance by one degree Celsius.
Thermal energy change
The change in a system’s thermal energy calculated as mass × specific heat capacity × temperature change.
power
the rate at which energy is transferred.
rate of energy transfer
the speed at which energy moves from one system to another.
power
the rate at which work is done
rate of work
the speed at which work is performed or energy is transferred
Power
The rate at which energy is transferred, calculated as energy transferred divided by time.
Energy transfer rate
The amount of energy moved per unit time, expressed in watts (joules per second).
power
The rate at which work is done or energy is transferred.
work done
The energy transferred when a force is applied over a distance.
watt
The unit of power, equivalent to one joule per second.
joule per second
The rate at which energy is transferred, equivalent to one watt.
power
the rate at which energy is transferred or work is done, measured in watts.
watt
the unit of power, equivalent to one joule per second.
power rating
The measure of the rate at which a device transfers energy, typically expressed in watts.
energy transfer
The process of moving energy from one system or object to another, often involving work done or heat.
power
the rate at which energy is transferred or work is done.
energy transfer
the process of moving energy from one system or object to another.
power
The rate at which energy is transferred or work is done.
energy transferred
The amount of energy that is moved from one system to another during a process.
Related topics