These are the Cambridge IELTS 18 Academic Reading Test 4 answers: the complete key for all 40 questions on Green roofs, The growth mindset and Alfred Wegener’s theory of continental drift. Every entry comes from Cambridge IELTS 18, Academic Test 4 — all 40 answers — so you can mark the paper the moment you put your pen down and start learning from it.

This hub pairs the answer table with a walkthrough for each passage, and every walkthrough explains the reasoning with quoted evidence rather than just listing letters. Mark your thirteen green roofs answers first, then read the Green roofs walkthrough while the questions are fresh, and repeat for the mindset and Wegener passages. The question types change from passage to passage, so each review highlights a different skill to sharpen. After this, the Cambridge IELTS 18 Academic Reading Test 1 hub starts the book again from the top. A second attempt at the same test a week later shows your real progress, not your memory.

Cambridge IELTS 18 Academic Reading Test 4 Reading Answers

Questions and Answers

Passage Walkthroughs

Green roofs

Passage 1 looks at what happens when city roofs are turned into living landscapes, from insulation benefits to storm water control. It covers Questions 1–13 and combines True/False/Not Given with summary completion, so expect a steady rhythm of verifying claims and hunting paraphrased detail. The statements follow the passage’s order more often than not, which helps you locate them quickly. The full Green roofs walkthrough explains all thirteen answers. Because the benefits stack up quickly in this passage, watch for statements that double or halve them.

The growth mindset

Passage 2 follows the rise of the idea that ability can be developed through effort, and the debates it sparked in classrooms and beyond. Questions 14–26 lean on matching information and sentence completion, which means a lot of movement between paragraphs and question types. Underline the researchers and their findings as you skim — this passage is built on them. The Growth mindset walkthrough shows where each answer sits and why. Sentence completion here means grammar checks: match the word form the sentence already implies.

Alfred Wegener: science, exploration and the theory of continental drift

The final passage tells how Alfred Wegener assembled evidence for continental drift from far-flung expeditions, and why the scientific world took so long to accept him. Questions 27–40 mix matching headings with completion tasks and multiple choice — a long, argument-driven test of stamina as much as vocabulary. Skim for the story first: the headings questions get dramatically easier once the narrative arc is clear. The Alfred Wegener walkthrough takes all fourteen answers apart. The story is chronological, so a quick margin timeline of expeditions keeps every detail question anchored.

Study Tips

The True/False/Not Given set over green roofs is where careless marks leak on this test. The passage states benefits of green roofs in enthusiastic terms, and examiners exploit that warmth: a statement that exaggerates a measured benefit is FALSE, not TRUE, and a benefit the passage never mentions is NOT GIVEN even if it is obviously true in the real world. Compare the statement to the sentence, never to your opinions. The True/False/Not Given strategy page drills exactly this discipline. One useful habit: write T, F or NG beside each statement before checking the key, so your review shows your reasoning, not just your score.

The Wegener passage opens with matching headings, and two habits make that set far easier. First, read only the first two sentences and the last sentence of each paragraph — writers signal their topic there. Second, match headings to paragraph topics, not to any matching word, because the wrong headings are usually written with the passage’s own vocabulary as bait. Our matching headings technique guide walks through both habits with practice sets.

Because this paper moves from roofs to mindsets to plate tectonics, candidates who attack every passage identically waste energy — the green roofs questions reward fast scanning, the mindset questions reward tracking researchers, and the Wegener questions reward patience with long paragraphs. Notice which mode cost you the most marks in the walkthroughs and drill that one. Many of the leaks come from a handful of common reading mistakes that are quick to fix once named.

Practice More Cambridge Tests

Finishing Cambridge IELTS 18 is a real milestone, and Simply IELTS helps you cash it in with the free IELTS reading course, which converts every review session into technique. Loop back to the Cambridge IELTS 18 Academic Reading Test 1 hub and see how much your score has grown since your first attempt.