Meaning: "eruptions" means violent events when hot rock and gas come out.

Wrong options:

• eruptons: It leaves out the "i". Check the letters: "eruptions". A small spelling mistake loses the mark.
• eruption: "eruption" has no "s" at the end. The speaker says "eruptions", so write the "s".

Correct answer: composition

Explanation: Listen again to "For the composition of". It comes after "the", so you need a word for a thing.

Meaning: "composition" means what something is made of.

Wrong options:

• compositon: It leaves out the "i". The right spelling is "composition". Every letter must be correct to get the mark.
• compositions: "compositions" has an extra "s" at the end. The speaker says "composition", with no "s".

Correct answer: pressures

Explanation: Here you hear "temperatures and pressures are". This is a list, so the second item is more than one and ends in s.

Meaning: "pressures" means forces from weight or depth.

Wrong options:

• presures: It leaves out the "s". The right spelling is "pressures". Every letter must be correct to get the mark.
• pressure: "pressure" has no "s" at the end. The speaker says "pressures", so write the "s".

Correct answer: beneath

Explanation: The speaker says "150 kilometers beneath the earth's". After a distance you need a place word meaning under.

Meaning: "beneath" means under something or below it.

Wrong options:

• beneth: It leaves out the "a". Write "beneath". Only the exact spelling gets the mark.

Correct answer: recorded

Explanation: You hear "have never been recorded by scientists". This already happened, so the word ends in ed.

Meaning: "recorded" means made a record or kept a report.

Wrong options:

• recored: It leaves out the "d". Check the letters: "recorded". A small spelling mistake loses the mark.
• record: "record" is missing the ending. The speaker says "recorded", with "ed" at the end.