Topic Summaries
Magnetic poles
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
Pressure
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
Pressure
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
- Certain materials, such as iron, can experience magnetic forces.
- These are non-contact forces.
- Magnetic forces are strongest near magnetic poles.
- Poles are labelled north or south depending on the direction they would eventually face if the magnet could freely turn.
- Every magnet must have one of each pole. Both poles are as strong as each other.
- Like poles will experience a repulsive force when brought near each other while unlike poles will attract.
- Permanent magnets are those that produce magnetic fields. Induced magnets are materials that become magnets when in another magnetic field.
- The poles of the induced magnet will always be so that it feels an attractive force in the field. Repulsive forces can only be experienced by two permanent magnets.
- When an induced magnet leaves the magnetic field, it will lose its magnetism very quickly.
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