Section 4 a) Specification

4.1 use the following units: kilogram (kg), joule (J), metre (m), metre/second (m/s), metre/second2 (m/s2), newton (N), second (s), watt (W).

Kilograms measure mass
Joules measure energy
Metres measure distance
Metres/Second measure velocity
Metres/Second2 measure acceleration
Newtons measure weight
Seconds measure time
Watts measure power

Section 3 a) Key Words

Angle: The space between two intersecting lines close to or at the point they meet.

Degrees: A unit of measurement for angles.

Frequency: The number of crests of a wave that travel past a point in a given unit of time.

Hertz: A measurement of frequency, the number of waves that pass in one second.

Metres: A measurement of distance

Metres/second: A measurement of speed or velocity. How many metres travelled in one second.

Velocity: How fast something is moving in a particular direction; a vector quantity.

Section 3 a) Specification

3.1 use the following units: degree (°), hertz (Hz), metre (m), metre/second (m/s), second (s).

Degrees are the unit of measurement for angles. There are 360 degrees in a full turn/circle.
Hertz are the unit of measurement for frequency.
Metres are a unit of measurement for distance
Metres per second are the unit of measurement for velocity.
Seconds are a measurement of time

Section 2 a) Key Words

Amperes: The unit of measurement for current

Charge: Whether there are more electrons or protons in a substance (negatively charged electrons vs positively charged protons) Positive and negative charges attract each other.

Coulombs: The rate of flow of current

Current: The rate of flow of electrical charge

Ohms: Unit of measurement of resistance

Potential difference: Also called voltage, it is the number of joules per coulomb, or the energy transferred per unit of current flowing per second.

Power: Rate of energy transferred.

Resistance: Anything that slows the flow in a circuit, increased by more components in series.

Voltage: Also called potential difference, it is the number of joules per coulomb, or the energy transferred per unit of current flowing per second.

Volts: Unit of measurement of voltage

Watts: Unit of measurement of power

Section 2 a) Specification

2.1 use the following units: ampere (A), coulomb (C), joule (J), ohm (Ω), second (s), volt (V), watt (W).

Ampere or Amps is used to describe the current in an electrical current.
Coulombs are used to describe the rate of flow of charge, in other words it's how many amps per second. (current / time)
Joules are used to measure quantities of energy transferred (voltage x current x time)
Ohms are used to measure resistance (voltage / current)
Seconds measure time.
Volts measure potential difference.
Watts measure power (current x voltage)

Section 1 a) Specification

1.1 use the following units: kilogram (kg), metre (m), metre/second (m/s),
metre/second2 (m/s2), newton (N), second (s), newton per kilogram (N/kg),
kilogram metre/second (kg m/s).

Kilogram : relating to mass

Metre : relating to distance

Metre/Second : relating to speed 

Metre/Second2 : relating to acceleration

Newton : relating to force

Second : relating to time

Newton per kilogram : relating to gravitational field strength

Kilogram metre/second : relating to momentum

Section 1 a) Key Words

Kilogram (kg): Measurement of mass, 1000 grams

Kilogram metre/second (kg m/s): Standard unit of measurement of momentum

Metre (m): Standard unit of measurement of distance

Metre/second (m/s): Standard unit of measurement of speed or velocity

Metre/second/second (m/s2): Standard unit of measurement of acceleration

Newton (N): Standard unit of measurement of force

Newton per kilogram (N/kg): Standard unit of measurement of gravitational field strength

Second (s): Standard unit of measurement of time

Units: A standard quantity by which other quantities may be expressed in relation to