IELTS VOCABULARY

Randomize: arrange or organize by chance, without any order or plan

Sentence: A randomized study of patients treated with the drug showed it to be effective

Galaxy: a collection of star systems

Sentence: There are reckoned to be about 400 billion stars in our galaxy, the Milky Way

Cosmology: metaphysical study of the origin and nature of the universe

Sentence: He has a fantastic ability for making physics and cosmology accessible.

Stellar: being or relating to or resembling or emanating from stars

Sentence: The Great Pyramid could have functioned as a stellar observatory during its construction.

Optical: relating to or using sight

Sentence: We examined the specimen under an optical microscope

Evolution: sequence of events involved in the development of a species

Sentence: The rapid evolution of IT networks has changed the world

Astronomer: A physicist who studies celestial bodies and the universe

Sentence: An astronomer can determine the brightness of each star.

Evolve: undergo development

Sentence: Influenza genes evolve a million times faster than ours