GradeGen

The size of a quantity, without its direction.

The size or amount of a quantity, expressed using a numerical value and an appropriate unit.

A measurement tells us the size or amount of a physical quantity. This is its magnitude, usually expressed as a number with a unit. For example, a mass of 3 kg has a magnitude of 3 kg.

The size of a quantity. For displacement, this is the straight-line distance between the starting and finishing points.

Use the word ‘magnitude’ in definitions: a scalar has magnitude only; a vector has magnitude and direction.

When describing a vector, include its direction as well as its magnitude and unit.

Compare arrow lengths only when the arrows use the same scale. Twice the magnitude needs twice the arrow length.

The size or numerical value of a quantity, expressed with an appropriate unit.

The size of a quantity without its positive or negative sign.

The size of a physical quantity, regardless of its direction.

A physical quantity is something that can be measured, such as mass, speed or force. Its magnitude means its size. For example, a mass of 5 kg tells us how much matter an object contains.

Magnitude

Definition

How each exam board covers it

AQA GCSE Combined Science Trilogy · 8464

Exam tips

Revise Combined Science with GradeGen

Edexcel GCSE Combined Science · 1SC0