AQA GCSE Combined Science Trilogy key terms

An attractive or repulsive non-contact force between magnetic poles.

A material, such as iron, steel, cobalt or nickel, that is attracted to a magnet and can become magnetised.

A region of a magnet where the magnetic forces are strongest. A magnet has a north pole and a south pole.

How many times larger an image is than the real object: $\text{magnification} = \text{image size} \div \text{real size}$. It has no unit.

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

A disease caused by protist pathogens and transmitted by mosquitoes, causing recurrent fever and sometimes death.

A cancerous growth whose cells invade neighbouring tissues and can spread in the blood to form tumours elsewhere.

Able to be bent or hammered into shape without breaking.

A measure of the amount of matter in an object, measured in kilograms (kg).

The total number of protons and neutrons in the nucleus of an atom.

A dull, non-shiny surface finish.

An average calculated by adding the values and dividing by the number of values included.

The quantity of reactant used or product formed during a time interval divided by the duration of that interval.

A viral disease that causes fever and a red skin rash, spreads through inhaled droplets and can be fatal if complications arise.

A manufactured replacement heart valve that controls the direction of blood flow.

The middle value after the data have been put in order; for an even number of values, the mean of the two middle values.

A substance or material through which a wave travels, such as air, water or glass.

A type of cell division in which genetic information is copied and the cell divides twice, producing four genetically different cells with half the original chromosome number.

The change of state from solid to liquid.

The temperature at which a substance changes from a solid to a liquid.

The shedding of the uterus lining at the start of a menstrual cycle, commonly called a period.

Plant tissue containing undifferentiated cells, found in growing regions such as root and shoot tips. Its cells retain the ability to differentiate throughout the plant’s life.

Tissue at the growing tips of shoots and roots containing unspecialised cells that divide and can differentiate into different types of plant cell.

The sum of all the chemical reactions in a cell or organism.

An element that reacts to form positive ions by losing electrons.

Obtaining a metal from a compound by a chemical reaction.

The strong electrostatic attraction between positive metal ions and delocalised electrons.

The strong electrostatic attraction between positive metal ions and delocalised electrons.