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Practice Reading: Multiple Choice, Single Answer ID: #4382 Solar system
Instructions ›
Read the text and answer the multiple-choice question by selecting the correct response. Only one response is correct.
The solar system was formed over four billion years ago from a cloud of gas and dust. At some unknown point, a powerful explosion deep in space sent out energy waves that began to compress the cloud, creating a force at the centre which drew the gas and dust particles closer together. As it was further compressed, the centre grew hotter and denser until the particles coalesced into larger units of mass—planets and moons. Gradually, the centre became so superheated that it formed a new star that we now call the Sun.

What does the writer say about the formation of the solar system?

* Click on the correct answer

Result:

AI explanationShows the answer. Tap to open.
Option 3: "Gases were compressed to form solid particles."

Explanation: This option is correct because it accurately reflects the process described in the text. The text explains that as the gas and dust were compressed, they coalesced into larger units of mass, which implies the formation of solid particles such as planets and moons from the gaseous material.

Option 1: "It was formed when a star came together."

Explanation: This option is incorrect because the text states that the solar system was formed from a cloud of gas and dust, not from a star. The formation of the Sun occurred later in the process, after the gas and dust were compressed, which contradicts the claim that a star was involved in the initial formation.

Option 2: "Waves of energy became compressed into matter."

Explanation: This option is incorrect as it misrepresents the process described in the text. The energy waves caused the cloud of gas and dust to compress, but they did not become matter themselves. The text emphasizes that the compression of the gas and dust led to the formation of planets and moons, not that the waves transformed into matter.

Option 4: "The planets on the periphery of the system were composed of solid rock."

Explanation: This option is incorrect because the text does not specify the composition of the planets as being solid rock. It only mentions that the gas and dust coalesced into larger units of mass, which could include various types of materials, not exclusively solid rock.

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