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Practice Listening: Multiple Choice, Multiple Answers ID: #36184 Short Tycho
Instructions ›
Listen to the recording and answer the question by selecting all the correct responses. You will need to select more than one response.

Transcript:

The impact of a meteorite released an enormous amount of energy, excavating a crater about twice as large as the lunar crater Tycho. The explosion lifted about 100 trillion tons of dust into the atmosphere, as can be determined by measuring the thickness of the sediment layer formed when this dust settled to the surface. Such a quantity of material would have blocked the sunlight completely from reaching the surface, plunging Earth into a period of cold and darkness that lasted at least several months. The explosion is also calculated to have produced vast quantities of nitric acid and melted rock that sprayed out over much of
Earth, starting widespread fires that must have consumed most terrestrial forests and grassland. Presumably, those environmental disasters could have been responsible for the mass extinction, including the death of the dinosaurs.

According to the paragraph, which of the following statements are true of the impact at the end of the Cretaceous period:

* Click on the correct answers

Result:

AI explanationShows the answer. Tap to open.
Option 1: "A large amount of dust blocked sunlight from Earth."

Explanation: The text states that the explosion lifted about 100 trillion tons of dust into the atmosphere, which would have blocked sunlight completely from reaching the surface. This directly supports the statement that a large amount of dust blocked sunlight from Earth.

Option 2: "Earth became cold and dark for several months."

Explanation: The text mentions that the dust blocking sunlight plunged Earth into a period of cold and darkness that lasted at least several months. This confirms that the statement is true as it is explicitly stated in the text.

Option 3: "New elements were formed in Earth's crust."

Explanation: The text does not mention the formation of new elements in Earth's crust. Instead, it discusses the effects of the meteorite impact, such as dust blocking sunlight and the production of nitric acid, but does not indicate any new elements being formed.

Option 4: "Large quantities of nitric acid were produced."

Explanation: While the text states that vast quantities of nitric acid were produced, it does not specify that this was a direct result of the impact itself. The statement is misleading as it implies a direct connection without context, and thus does not align with the main focus of the text.

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