Activity of text interpretation, aimed at students in the seventh year of elementary school, about the thermos bottle. Do you know how it works? How do you keep the liquid cold or hot? Let's find out? To do this, carefully read the text below! Then answer the various interpretative questions proposed!
You can download this text comprehension activity in an editable Word template, ready to print to PDF, as well as the completed activity.
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SCHOOL: DATE:
PROF: CLASS:
NAME:
Read:
Inside, her hot chocolate doesn't cool, nor does her soda heat, no matter how hot outside. You carry it around, but you never ask yourself: how does the thermos work? How injustice…
The action of the thermos is pure physics. That's right! The basic principle of this domestic appliance is to avoid the forms of heat transmission, which occur from a warmer object to a colder one.
In other words, to keep its contents warm or cold, the thermos has an ampoule of double-walled glass, mirrored internally and externally, with the space between them practically empty. The mirrored walls are to reflect the radiation, preventing it from spreading out from the inside of the container, in the case of hot liquids (like your chocolate); or from the outside in, in the case of cold liquids (such as your soft drink). The empty space, on the other hand, is to hinder the spread of heat through the contact of the bottle with the region around it. This is how this container makes it difficult for heat to enter or leave.
If the thermos is dropped, even with the external protection, which is usually made of plastic, the mirror ampoule can crack or crack. Consequently, the space between the walls is no longer empty, and the air that remains between the walls makes it difficult to retain heat.
Moral of the story: if your bottle is no longer able to keep the chocolate very warm or the cold drink for a long time, maybe it's because of some damage to the mirrored walls. So when you get a new one, be very careful!
Fábio Luís Alves Pena. “Ciência Hoje das Crianças” magazine. Edition 210. Available in:. (With cut).
Question 1 - Watch:
"How does the thermos work?"
From the title, it can be said that the text is intended to:
( ) explain something.
( ) express an opinion.
( ) tell a story.
Question 2 - In “How much injustice…”, the reticences:
( ) indicate an incomplete speech by the author.
( ) suggest a certain extension of the author's thought.
( ) indicate the continuation of a fact mentioned by the author.
Question 3 - In the passage “The Basic Principle of this household appliance is to avoid forms of heat transmission […]", the highlighted expression:
( ) evaluates the thermos.
( ) returns the thermos.
( ) characterizes the thermos.
Question 4 – Reread this fragment in which the author describes the thermos:
“[…] the thermos has a glass ampoule with double walls, internally and externally mirrored, with the space between them practically empty”.
The thermos has the constitution described above to:
( ) “[…] keep its content warm or cold […]”.
( ) “[…] reflect the radiation, preventing it from spreading from the interior of the container […]”
( ) “[…] hinder the spread of heat by the contact of the bottle with the region around it.”
Question 5 - In the part “[…] hot liquids (like your chocolate) […]”, the term “how” introduces:
( ) an example of a hot liquid.
( ) a suggestion of hot liquid.
( ) a comparison between hot liquids.
Question 6 – In the segment “[…] the external protection, which is usually made of plastic […]”, the preposition “of” expresses the relationship of:
( ) mode.
( ) possession.
( ) matter.
Question 7 – The author guides the reader in the excerpt:
( ) “[…] if your bottle is no longer able to keep the chocolate very warm […]”
( ) “[…] maybe it's because of some damage to the mirrored walls.”
( ) “So, when you get a new one, be very careful!”
Per Denyse Lage Fonseca
Graduated in Languages and specialist in distance education.
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