Meaning: "physicists" means people who study physics.

Wrong options:

• phisicists: It has "i" where the word has "y". Check the letters: "physicists". A small spelling mistake loses the mark.
• physicist: "physicist" has no "s" at the end. The speaker says "physicists", so write the "s".

Correct answer: magnetism

Explanation: The speaker says "electro magnetism or general". The missing word is a field word that ends in ism.

Meaning: "magnetism" means the study and force of magnets.

Wrong options:

• magnetisim: It adds an extra "i". Check the letters: "magnetism". A small spelling mistake loses the mark.
• magnetics: "magnetics" is a close word, but it ends in "cs". The speaker says "magnetism", which ends in "sm".

Correct answer: hierarchy

Explanation: You hear "'hierarchy of sciences'". The sentence wants a word meaning order or ranking.

Meaning: "hierarchy" means the order or ranking of sciences.

Wrong options:

• heirarchy: Two letters are in the wrong order. Check the letters: "hierarchy". A small spelling mistake loses the mark.
• hierachy: It leaves out the "r". Check the letters: "hierarchy". A small spelling mistake loses the mark.

Correct answer: level

Explanation: Listen for "sits at a level between maths". It needs a short position word, spelled level.

Meaning: "level" means a position between maths and physics.

Correct answer: operating

Explanation: On the recording you hear "quantum mechanics is the operating system". The missing word comes before system, so use operating.

Meaning: "operating" means running the basic processes of other theories.

Wrong options:

• operting: It leaves out the "a". Check the letters: "operating". A small spelling mistake loses the mark.
• operational: "operational" is a close word, but it ends in "onal". The speaker says "operating", which ends in "ng".

Correct answer: exception

Explanation: Listen again to "with the exception of general". It is a word for a thing, person or idea that is not included.

Meaning: "exception" means something that is not included with the rest.

Wrong options:

• exeption: It leaves out the "c". Write "exception". Only the exact spelling gets the mark.
• except: "except" is missing the ending. The speaker says "exception", with "ion" at the end.