OCR GCSE Combined Science B key terms

The liquid or solution that passes through filter paper during filtration.

The separation of suspended, insoluble solids from a fluid by passing it through a filter.

The speed of an object at the end of the interval being considered, represented by $v$.

A resource with a limited supply that is not replaced quickly enough to keep up with its use.

A rule using three mutually perpendicular digits of the left hand: first finger for magnetic field, second finger for conventional current and thumb for force.

The ability to bend easily; a stiff material resists bending.

A structure in an ovary containing a developing egg.

A model showing the interconnected feeding relationships within a community.

A push or pull on an object caused by its interaction with another object, measured in newtons (N).

A force that draws particles towards one another.

A mixture designed as a useful product, with components combined in carefully measured proportions to give the required properties.

The preserved remains or traces of an organism from the past, such as bones, footprints or burrows.

Coal, oil or natural gas formed from ancient organic material; burning these fuels releases stored carbon as carbon dioxide.

The collection of fossils that provides evidence of organisms living at different times in Earth's history.

A group of hydrocarbons separated from crude oil that have similar molecular sizes and boiling points.

The separation of a mixture into fractions using differences in boiling point, through vaporisation and condensation.

A diagram showing the forces acting on one selected object or system as labelled arrows.

Motion in which gravity is the only force acting on an object.

The number of complete wave cycles passing a point each second, measured in hertz (Hz).

A table showing how often each value, category or class interval occurs.

A contact force that opposes surfaces sliding, or tending to slide, relative to each other.

Follicle-stimulating hormone: a hormone normally released by the pituitary gland that stimulates follicles in the ovaries, allowing eggs to mature.

A hollow carbon molecule shaped as a cage or tube, with its atoms arranged in rings.

A sex cell, such as a sperm or egg cell, whose nucleus fuses with another gamete nucleus during fertilisation.

High-energy electromagnetic radiation emitted by a nucleus, with no electric charge or mass number.

Equipment that removes pollutants from waste gases, for example by reacting acidic sulfur dioxide with an alkaline material.

A piece of apparatus with a graduated barrel and movable plunger used to collect and measure the volume of a gas.