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This reading practice simulates one part of the IELTS General Reading test. You should spend about twenty minutes on it. Read the passage and answer questions 1-14.

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For most, the largest planet in our solar system, Jupiter, is best known for its vast size. However, Jupiter is also remarkable for many moons which orbit around it. Well-known astronomer Galileo Galilei was the first to discover the four most famous moons, though they were given their present name...
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Questions 1-5
Complete each sentence with the correct ending A-L from the box below.

Write the correct letter A-L in boxes 1-5 on your answer sheet.

NB You may use any letter more than once.

  1. Callisto may be a rocky body rather than an icy one
  2. are likely to have been born from a circumplanetary disk.
  3. has a core that consists mainly of rock and metal.
  4. originated from remnants of asteroids captured by Jupiter’s gravitational pull.
  5. are smaller than asteroids that orbit Jupiter
  6. Callisto to be differentiated.
  7. has surface temperature that is constant at all times of the day.
  8. Callisto could not differentiate because it was frozen solid
  9. are larger than asteroids and orbit the sun
  10. has the same mass and diameter as the planet Mercury
  11. is the satellite closest to Jupiter's surface
  12. completes one rotation every seventeen days.

1. Dwarf planets …

2. Callisto …

3. Scientists expected that …

4. The four moons of Jupiter …

5. Ganymede ...

The answer is I. According to the sentence in paragraph 1: “If orbiting the sun rather than the planet Jupiter, these four moons might be large enough to be considered dwarf planets.” This implies that dwarf planets are larger than asteroids and orbit the sun, which matches ending I.

Associated Text:
If orbiting the sun rather than the planet Jupiter, these four moons might be large enough to be considered dwarf planets.

The answer is L. Paragraph 3 states, “Callisto, the outermost of Jupiter's four largest satellites, orbits the planet in seventeen days at a distance from Jupiter of two million kilometers.” This fact matches ending L: 'completes one rotation every seventeen days.'

Associated Text:
Callisto, the outermost of Jupiter's four largest satellites, orbits the planet in seventeen days at a distance from Jupiter of two million kilometers.

The answer is F. In paragraph 4: "This fact surprised scientists, who expected that all the big icy moons would be differentiated." This shows that scientists expected Callisto to be differentiated.

Associated Text:
This fact surprised scientists, who expected that all the big icy moons would be differentiated.

The answer is B. According to paragraph 6: “Early moons could have been formed by a circumplanetary disk, gathered by different types of gas and solid debris, similar to a protoplanetary disk.” This means the four largest moons are likely to have been born from a circumplanetary disk.

Associated Text:
Early moons could have been formed by a circumplanetary disk, gathered by different types of gas and solid debris, similar to a protoplanetary disk.

The answer is C. In paragraph 7: “Measurements of its gravity field tell us that the rock and metal sank to form a core about the size of our Moon...” This matches ending C: 'has a core that consists mainly of rock and metal.'

Associated Text:
Measurements of its gravity field tell us that the rock and metal sank to form a core about the size of our Moon, with a mantle and crust of ice floating above it.

Questions 6-10
Do the following statements agree with the information given in the reading passage? In boxes 6-10 on your answer sheet, write

TRUE   if the statement agrees with the information
FALSE   if the statement contradicts the information
NOT GIVEN   if there is no information on this.

6. A spate of technological developments with telescopes and telescopic photography leading to the discovery of 13 moons.

7. The further away the surface ice is from the Sun, the more its temperature differs from that of the warmer ice on Earth.

8. Ganymede’s interior is not fully solid.

9. Each generation of moons thickened the circumplanetary disk.

10. The large moons of Jupiter gradually broke up into small irregular-shaped moons.

The answer is TRUE. Paragraph 2 says, “Throughout the 20th century, advancements in technology related to telescopes and telescopic photography brought about the discovery of another 13 moons by the year 1979.” This directly matches the statement.

Associated Text:
Throughout the 20th century, advancements in technology related to telescopes and telescopic photography brought about the discovery of another 13 moons by the year 1979.

The answer is NOT GIVEN. There is no information in the passage that directly states that the further away the surface ice is from the Sun, the more its temperature differs from that of the warmer ice on Earth.

Associated Text:

The answer is TRUE. The passage says about Ganymede: “In addition, the Galileo spacecraft discovered that Ganymede has a magnetic field, the signature of a partially molten interior.” This means Ganymede’s interior is not fully solid.

Associated Text:
In addition, the Galileo spacecraft discovered that Ganymede has a magnetic field, the signature of a partially molten interior.

The answer is FALSE. Paragraph 6 explains: “many generations of large moons ... caused the disk to thin, until eventually the Galilean moons were the only ones able to be protected by an orbital resonance.” This shows that each generation of moons thinned, not thickened, the circumplanetary disk.

Associated Text:
many generations of large moons which caused the disk to thin, until eventually the Galilean moons were the only ones able to be protected by an orbital resonance.

The answer is NOT GIVEN. The passage does not state that the large moons of Jupiter gradually broke up into small irregular-shaped moons. It only describes the likely origin of the current small moons as captured asteroids or fragments, not as breakups of the large moons.

Associated Text:

Questions 11-14
Choose the correct letter, A, B, C or D.

Write your answers in boxes 11-14 on your answer sheet.

11. How do scientists know that Callisto is made up largely of ice?

12. How is Callisto different from all other planet-sized objects in the solar system?

13. Each of the following provides evidence about Ganymede's interior EXCEPT

14. The differences in how Callisto and Ganymede evoked are most probably due to differences in their …

The answer is B. (A) is incorrect as no sample was taken. (B) is supported in paragraph 3: “Its mass is only one-third as great, which means its density must be only one-third as great as well. This tells us that Callisto has far less of the rocky metallic materials found in the inner planets and must instead be an icy body through much of its interior.” (C) speaks about temperature, not direct evidence. (D) incorrectly generalizes all bodies in the Jovian system. Thus, (B) is correct.

Associated Text:
Its mass is only one-third as great, which means its density must be only one-third as great as well. This tells us that Callisto has far less of the rocky metallic materials found in the inner planets and must instead be an icy body through much of its interior.

The answer is C. (A) refers to craters, (B) refers to non-flowing glaciers, (C) is supported by the line in paragraph 5: “Callisto is unique among the planet-sized objects of the solar system in its absence of interior forces to drive geological evolution.” (D) refers to age, which is not unique. So (C) is correct.

Associated Text:
Callisto is unique among the planet-sized objects of the solar system in its absence of interior forces to drive geological evolution.

The answer is C. Paragraph 7 provides evidence about Ganymede’s interior from (A) its magnetic field, (B) geological activity, and (D) measurements of gravity field. (C) Ganymede's large size is not discussed as direct evidence of its interior; it is only mentioned for comparison in the passage.

Associated Text:
Measurements of its gravity field tell us that the rock and metal sank to form a core about the size of our Moon, with a mantle and crust of ice floating above it. In addition, the Galileo spacecraft discovered that Ganymede has a magnetic field, the signature of a partially molten interior. Ganymede is not a dead world, but rather a place of continuing geological activity powered by an internal heat source.

The answer is B. In paragraph 7, it is discussed that “But more likely the gravity of Jupiter is to blame for Ganymede's continuing geological activity. Ganymede is close enough to Jupiter that tidal forces from the giant planet may have episodically heated its interior and triggered major convulsions on its crust.” This means their different evolution is most probably due to differences in their distance from Jupiter.

Associated Text:
But more likely the gravity of Jupiter is to blame for Ganymede's continuing geological activity. Ganymede is close enough to Jupiter that tidal forces from the giant planet may have episodically heated its interior and triggered major convulsions on its crust.

Answer Sheet
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Résumé des scores
0 / 1
Multiple Choice
Matching Sentence Endings
Note Completion
Table Completion
Flow Chart Completion
Summary Completion
Multiple Selection
Short Answer
Matching Headings
Matching Features
Matching Information
Identifying Information
Identifying Viewer Claims
Sentence Completion
Diagram Labelling
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Tips to improve your reading speed
To get a high score on the IELTS reading section, you need to have a fast reading speed. To have a fast reading speed, you need to improve your vocabulary and practice dissecting sentences. One strategy to dissect a sentence is to look for the subject and verb of the sentence. Finding the subject and verb will help you better understand the main idea of said sentence. Keep in mind, a common feature of a IELTS reading passage is to join strings of ideas to form long compound sentences. This produces large chunks that students have a hard time absorbing. Do not get overwhelmed by its length, just look for the subject and verb, the rest of the ideas will flow.

Keep in mind, having a slow reading speed makes skimming or scanning a reading passage more difficult. The process of quickly skimming through a reading passage for specific keywords or main ideas is a requirement for you to employ successful reading strategies to improve your IELTS reading score. In other words, skimming and scanning are critical skills to ensure you complete all questions in the allotted time frame.
IELTS Reading Strategies
Once you can read and comprehend a passage with a rate of, at least, 220 words per minute, you'll be ready to start implementing our strategies. All too often, students spend too much time reading the passages and not enough time answering the questions. Here is a step by step guide for tackling the reading section.

  1. Step 1: Read questions first

    One of the most common mistakes that candidates make when approaching the reading exam is reading every single word of the passages. Although you can practice for the exam by reading for pleasure, "reading blindly" (reading without any sense of what the questions will ask) will not do you any favors in the exam. Instead, it will hurt your chances for effectively managing your time and getting the best score.

    The main reason to read the questions first is because the type of question may determine what you read in the passage or how you read it. For example, some question types will call for the "skimming" technique, while others may call for the "scanning" technique.

    It is important to answer a set of questions that are of the same question type. You'll need to determine which question type you want to tackle first. A good strategy would be to start with the easier question type and move on to more difficult question types later. The Easiest question types are the ones where you spend less time reading. For example, the Matching Heading question type is an easier one because you only need to find the heading that best describes the main idea of a paragraph. An example of a difficult question type would be Identifying Information. For this question type, you'll need to read each paragraph to find out if each statement is TRUE, FALSE, or NOT GIVEN according to the passage.

    Here is a table that lists the difficulty levels for each question type. Use this table as a reference when choosing which question type you want to tackle first.

    Difficulty level Question Type
    Easy Sentence Completion
    Short answer
    Medium Matching Features
    Multiple choice
    Matching Headings
    Summary, Table, Flow-Chart Completion
    Difficult Matching Sentence Endings
    Matching Information
    Identifying Information (TRUE/FALSE/NOT GIVEN)
    Identifying Viewer's claims (YES/NO/NOT GIVEN)

  2. Step 2: Read for an objective

    After you've read the questions for the passage, you will be able to read for an objective. What does this mean? For example, if you come across a question that includes the year "1896", you can make a note of when this year comes up in the text, using it to answer the question later on. There are two reading techniques that will help you stay on track with reading for an objective. The first one, skimming, is best defined as reading fast in order to get the "gist", or general idea, or a passage. With this technique, you are not stopping for any unfamiliar words or looking for specific details. The second technique, scanning, is best defined as reading for specific information. With this technique, you are not reading for the overall gist, but rather, specific information. Notice how each of these techniques has a specific objective in mind. This will help you find information more quickly.

  3. Step 3: Take notes

    As you're reading for an objective, you should also be making notes on the margins of the passage, placing stars next to key information, or underlining things that you believe will help you answer the various questions. This will make it easier for you to check back when you are asked certain things in the questions. Choose whichever note-taking system is right for you - just make sure you do it!

  4. Step 4: Answer wisely

    After you've read the questions, read the passage, and have taken any appropriate notes, you you should have located the part of the text where you where you need to read carefully. Then just read carefully and think critically to determine the correct answer.

IELTS Reading Question Types
 
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