OCR Gateway Science Physics A – P1

In physics, the kinetic energy (KE) of an object is the energy that it has due to its motion

Specific heat capacity is how much heat energy is required to raise 1kg of a substance by 1 degree Celsius

The quantity power is the rate at which work is done. The quicker work is done the greater the power

When a force causes an object to move, work is being done on the object by the force

Stretching or squashing an object can transfer energy into its elastic potential energy store

The size of the current is the rate of flow of charge. Electrons are negatively charged particles and which transfer energy through wires as electricity

Resistance is an electrical quantity that measures how the device or material reduces the electric current flow through it

The power of an appliance is the energy that is transferred per second. Electric power is the rate, per unit time, at which electrical energy is transferred by an electric circuit

Density is a measure of how compact the particles are in a substance. Density is defined as the mass per unit volume

Specific latent heat is the energy needed to change the state of a substance

Lifting an object in a gravitational field transfers energy into the objects gravitational energy store

The efficiency of a device is the proportion of input energy that is converted to useful energy

The potential difference between two points is the energy transferred per unit charge. An electrical circuit is an energy transformation device.