Year 7 Science Key Vocabulary

This set of flashcards covers key science vocabulary for Year 7, including biology, chemistry, and physics terms and their definitions.

Cell

The smallest unit of life; all living things are made of cells.

Tissue

A group of similar cells that work together to do a job.

Organ

A group of tissues that perform a specific function in the body.

Organ system

A group of organs that work together to carry out a life process.

Reproduction

The process by which living organisms produce new individuals.

Respiration

A process in cells where energy is released from glucose using oxygen.

Photosynthesis

A process in green plants that uses sunlight to make food (glucose) from carbon dioxide and water.

Habitat

The natural environment where an organism lives.

Ecosystem

A community of living things and their environment.

Food chain

A sequence that shows who eats what in an ecosystem.

Element

A pure substance made of only one type of atom.

Atom

The smallest particle of an element.

Compound

A substance made when two or more elements are chemically joined.

Mixture

A combination of substances that are not chemically joined.

Reaction

A change where substances turn into new substances.

Evaporation

The process of turning from liquid to gas.

Condensation

Gas turning back into a liquid.

Melting

Changing from solid to liquid.

Freezing

Changing from liquid to solid.

Dissolve

When a solid mixes with a liquid to form a solution.

Solution

A mixture where a solute has dissolved in a solvent.

Force

A push or a pull that can change the motion or shape of an object.

Gravity

A force that pulls objects towards the Earth.

Friction

A force that resists movement between two surfaces.

Speed

How fast something is moving (distance divided by time).

Energy

The ability to do work or cause change.

Kinetic energy

Energy of movement.

Potential energy

Stored energy.

Circuit

A complete path through which electricity flows.

Current

The flow of electric charge in a circuit.

Voltage

The push that makes electric charges move.

Insulator

A material that does not allow electricity to flow through it easily.

Conductor

A material that allows electricity to flow through it easily.