Topic Summaries
Work on gases (HT ONLY)
Energy and power
Renewable energy and efficiency
Charge, current, and electric fields
Potential difference and resistors
Electricity
Volume and gases
States of matter and heat capacity
Radiation
Nuclear fusion and fission
Forces
Velocity and acceleration
Gravity and Newton's Laws
Moments and elastic potential
Stopping, braking, and momentum
Properties of waves
Electromagnetic waves
Refraction and lenses
Light, colour, and ray diagrams
Absorbing and emitting infrared radiation
Magnetic fields
Motor effect, generator effect, and transformers
Science skills: Experimental procedures
Science skills: Presenting and using data
Science skills: Measuring results
Energy and power
Renewable energy and efficiency
Charge, current, and electric fields
Potential difference and resistors
Electricity
Volume and gases
States of matter and heat capacity
Radiation
Nuclear fusion and fission
Forces
Velocity and acceleration
Gravity and Newton's Laws
Moments and elastic potential
Stopping, braking, and momentum
Properties of waves
Electromagnetic waves
Refraction and lenses
Light, colour, and ray diagrams
Absorbing and emitting infrared radiation
Magnetic fields
Motor effect, generator effect, and transformers
Science skills: Experimental procedures
Science skills: Presenting and using data
Science skills: Measuring results
- Work is done on a gas when it is compressed or allowed to expand by applying a force (e.g. with a piston).
- Doing work on a gas increases its internal energy (the total kinetic and potential energy of particles).
- Compressing a gas leads to increased pressure and temperature if done quickly and energy isn’t transferred away.
- The particles move faster when energy is transferred to the gas, increasing their kinetic energy. If a gas is compressed slowly, heat may be transferred to the surroundings, reducing temperature rise.
- Expanding a gas (e.g. allowing it to push a piston) causes the gas to do work on the surroundings, reducing internal energy.
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