gcse-aqa-physics-paper-1

gcse-aqa-physics-paper-1

Pressure in a Gas

Gas Pressure is created when gas particles collide with the walls of their container. The more often the particles collide with the walls, and the faster they are moving, the greater the pressure.

GCSE AQA Physics P1

Kinetic Energy

In physics, the kinetic energy (KE) of an object is the energy that it has due to its motion. It is defined as the work needed for an object of a known mass to accelerate to a given velocity.
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Power

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

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

Resistance is an electrical quantity that measures how a device or material reduces the electrical current flow through it.
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Electrical Power

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.
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Density

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

The radioactivity of a sample decreases over time. Half life is a measurement of this decrease.
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Gravitational Potential Energy

Lifting an object in a gravitational field transfers energy into the objects gravitational energy store. Gravitational potential energy is the energy an object has due to its height above Earth.
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Energy Transformed

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