The hot gas that water changes into when it boils

The scientific study of the mind and how it influences behaviour

Very strange or unusual and difficult to explain

A section of a piece of writing, usually consisting of several sentences dealing with a single subject.

A brother or sister

A device that is attached to people or objects to make them fall slowly and safely when they are dropped from an aircraft. It consists of a large piece of thin cloth that opens out in the air.

When you trust in yourself and your abilities

To go from your country to another

A place where you can sit

Giving pleasure because it provides something you need or want

Without speaking

Synonym of unfortunate

A written list of questions that are answered by a number of people so that information can be collected from the answers