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The Child's Book of Nature
The Child's Book of Nature

Chapter XXXI

Chapter 31 of The Child's Book of Nature is here in full — 263 sentences across 53 reading sections, with audio for every sentence and word.

Cover illustration for The Child's Book of Nature
Context Illustration Reading 1/52 · 5 lines
English subtitles · tap any word to listen 1 / 5
HEATED AIR.
Balloons are sometimes, as I have told you, filled with heated air.
This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.
Now observe why the heated air is lighter than the cool air.
It is because the heat swells the air, or _expands_ it, as it is commonly expressed.
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LEARNER DICTIONARY
Archivist
/ˈɑːrkɪvɪst/
Editorial verification pending

A keeper or guardian of historical records and memories.

The Child's Book of Nature

Chapter XXXI

Chapter 31 of The Child's Book of Nature is here in full — 263 sentences across 53 reading sections, with audio for every sentence and word.

Reading 1/52 · 5 reading units · Lines 1–5

Line 1
HEATED AIR.
/ˈhiːtəd er/
Line 2
Balloons are sometimes, as I have told you, filled with heated air.
/bəˈluːnz ɑːr səmˈtaɪmz æz aɪ hæv toʊld juː fɪld wɪð ˈhiːtəd er/
Line 3
This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.
/ðɪs ˈhiːtəd er ɪz ˈlaɪtər ðæn ðə kuːl er ərˈaʊnd ɪt ənd soʊ ðə bəˈluːn ˈraɪzəz ɔːr ˈræðər ɪz pʊʃt ʌp/
Line 4
Now observe why the heated air is lighter than the cool air.
/naʊ əbˈzɜːrv waɪ ðə ˈhiːtəd er ɪz ˈlaɪtər ðæn ðə kuːl er/
Line 5
It is because the heat swells the air, or _expands_ it, as it is commonly expressed.
/ɪt ɪz bɪˈkɔːz ðə hiːt swelz ðə er ɔːr ɪkˈspændz ɪt æz ɪt ɪz ˈkɑːmənli ɪkˈsprest/

Learner Dictionary

These definitions explain words found in the current reading and keep every example grounded in its original sentence.

Oxford-style entry order: headword, part of speech, US IPA, concise definition, contextual example, and audio.

balloon noun US /bəˈluːn/

large tough nonrigid bag filled with gas or heated air

From this reading “This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.”

Balloons noun US /bəˈluːnz/

plural of “balloon” — large tough nonrigid bag filled with gas or heated air

From this reading “Balloons are sometimes, as I have told you, filled with heated air.”

commonly adverb US /ˈkɑːmənli/

under normal conditions

From this reading “It is because the heat swells the air, or _expands_ it, as it is commonly expressed.”

expands verb US /ɪkˈspændz/

third-person singular of “expand” — extend in one or more directions

heated adjective US /ˈhiːtəd/

made warm or hot (“het” is a dialectal variant of “heated”)

From this reading “HEATED AIR.”

lighter noun US /ˈlaɪtər/

a substance used to ignite or kindle a fire

From this reading “This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.”

rises noun US /ˈraɪzəz/

plural of “rise” — a growth in strength or number or importance

From this reading “This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.”

swells noun US /swelz/

plural of “swell” — the undulating movement of the surface of the open sea

From this reading “It is because the heat swells the air, or _expands_ it, as it is commonly expressed.”

Word partnerships in these lines

English keeps certain words together, and knowing the pair is worth more than knowing each word alone. Every partnership below was counted across our whole published library, and earns its place by appearing far more often than two unrelated words of the same frequency would.

Shown as this reading writes them, with the form the library counts, what kind of pairing it is, and how often it occurs.

HEATED AIR adjective + noun

In this reading “HEATED AIR.”

cool air adjective + noun

In this reading “This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.”

All words in this reading · 37

Every word in these five lines is listed here, and every one of them can be played on its own.

Dictionary details are shown only when verified; these are not licensed Oxford entries.

AIRnounUS /er/

a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of

From this reading HEATED AIR.

andconjunctionUS /ənd/

used to join words or parts of a sentence that go together

From this reading This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.

areauxiliary verbUS /ɑːr/

the form of “be” used with you, we, they, or a plural noun

From this reading Balloons are sometimes, as I have told you, filled with heated air.

aroundprepositionUS /ərˈaʊnd/

surrounding, or on every side of, something

From this reading This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.

asconjunctionUS /æz/

at the same time that; because; in the way that

From this reading Balloons are sometimes, as I have told you, filled with heated air.

balloonnounUS /bəˈluːn/

large tough nonrigid bag filled with gas or heated air

From this reading This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.

BalloonsnounUS /bəˈluːnz/

plural of “balloon” — large tough nonrigid bag filled with gas or heated air

From this reading Balloons are sometimes, as I have told you, filled with heated air.

becauseconjunctionUS /bɪˈkɔːz/

for the reason that

From this reading It is because the heat swells the air, or _expands_ it, as it is commonly expressed.

commonlyadverbUS /ˈkɑːmənli/

under normal conditions

From this reading It is because the heat swells the air, or _expands_ it, as it is commonly expressed.

cooladjectiveUS /kuːl/

neither warm nor very cold; giving relief from heat

From this reading This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.

expandsverbUS /ɪkˈspændz/

third-person singular of “expand” — extend in one or more directions

From this reading It is because the heat swells the air, or _expands_ it, as it is commonly expressed.

expressedadjectiveUS /ɪkˈsprest/

communicated in words

From this reading It is because the heat swells the air, or _expands_ it, as it is commonly expressed.

filledadjectiveUS /fɪld/

(usually followed by “with” or used as a combining form) generously supplied with

From this reading Balloons are sometimes, as I have told you, filled with heated air.

haveauxiliary verbUS /hæv/

used with a past participle to form the perfect tenses

From this reading Balloons are sometimes, as I have told you, filled with heated air.

heatnounUS /hiːt/

a form of energy that is transferred by a difference in temperature

From this reading It is because the heat swells the air, or _expands_ it, as it is commonly expressed.

HEATEDadjectiveUS /ˈhiːtəd/

made warm or hot (“het” is a dialectal variant of “heated”)

From this reading HEATED AIR.

IpronounUS /aɪ/

the person speaking or writing, as the subject of the verb

From this reading Balloons are sometimes, as I have told you, filled with heated air.

isauxiliary verbUS /ɪz/

the form of “be” used with he, she, it, or a singular noun

From this reading This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.

itpronounUS /ɪt/

a thing, animal, or idea already mentioned

From this reading This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.

lighternounUS /ˈlaɪtər/

a substance used to ignite or kindle a fire

From this reading This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.

NowadverbUS /naʊ/

in the historical present; at this point in the narration of a series of past events

From this reading Now observe why the heated air is lighter than the cool air.

observeverbUS /əbˈzɜːrv/

discover or determine the existence, presence, or fact of

From this reading Now observe why the heated air is lighter than the cool air.

orconjunctionUS /ɔːr/

used to join alternatives or possibilities

From this reading This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.

pushedverbUS /pʊʃt/

past form of “push” — move with force

From this reading This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.

ratheradverbUS /ˈræðər/

on the contrary

From this reading This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.

risesnounUS /ˈraɪzəz/

plural of “rise” — a growth in strength or number or importance

From this reading This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.

soconjunctionUS /soʊ/

for that reason; with the result that

From this reading This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.

sometimesadverbUS /səmˈtaɪmz/

on certain occasions or in certain cases but not always

From this reading Balloons are sometimes, as I have told you, filled with heated air.

swellsnounUS /swelz/

plural of “swell” — the undulating movement of the surface of the open sea

From this reading It is because the heat swells the air, or _expands_ it, as it is commonly expressed.

thanconjunctionUS /ðæn/

used to introduce the second part of a comparison

From this reading This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.

thedeterminerUS /ðə/

used before a noun that is already known, already mentioned, or the only one of its kind

From this reading This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.

ThisdeterminerUS /ðɪs/

used for a person or thing that is near, or that has just been mentioned

From this reading This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.

toldverbUS /toʊld/

inflected form of “tell” — express in words

From this reading Balloons are sometimes, as I have told you, filled with heated air.

upadjectiveUS /ʌp/

being or moving higher in position or greater in some value; being above a former position or level

From this reading This heated air is lighter than the cool air around it, and so the balloon rises, or, rather, is pushed up.

whynounUS /waɪ/

the cause or intention underlying an action or situation, especially in the phrase “the whys and wherefores”

From this reading Now observe why the heated air is lighter than the cool air.

withprepositionUS /wɪð/

in the company of; together with

From this reading Balloons are sometimes, as I have told you, filled with heated air.

youpronounUS /juː/

the person or people being spoken to

From this reading Balloons are sometimes, as I have told you, filled with heated air.

Chapter 31 of The Child's Book of Nature by Worthington Hooker holds 263 sentences, grouped into 53 reading sections of at most 5 sentences. The text is the source edition, unabridged, and the chapter records which sentences cover which part of the work so that nothing is dropped. Every word can be tapped for its pronunciation and dictionary entry.

What does chapter 31 of The Child's Book of Nature contain?

Chapter 31 holds 263 sentences of The Child's Book of Nature, unabridged, divided into 53 reading sections.

This page carries chapter 31 of The Child's Book of Nature by Worthington Hooker exactly as it stands in the source edition, without abridgement. It runs to 263 sentences, grouped into 53 sections of at most 5 sentences so that a reader can take the chapter in steady, finishable pieces. The chapter also stores a coverage record mapping every one of its sentences to a part of the work, which is how the edition demonstrates that no line was dropped.

How do I study chapter 31 of The Child's Book of Nature?

Work through the 53 sections in order, replaying any sentence and tapping unfamiliar words for their entries.

Each of the 53 sections in this chapter is short enough to read once, hear once, and then re-read with the vocabulary in view. Tapping a word plays it alone and opens its dictionary entry with IPA, part of speech and meaning, so the reader is never forced to guess a pronunciation from spelling. Working section by section keeps a long chapter from becoming an undifferentiated wall of text, which is the usual reason a reader abandons a work of this period.

Can chapter 31 be read aloud to me?

Yes — every sentence and every individual word in chapter 31 can be played aloud in United States English.

Audio covers the whole chapter: any sentence can be played, and any single word within it can be played on its own. The voice uses United States English. For a work of this period that matters, because spelling is an unreliable guide to pronunciation for vocabulary that has fallen out of daily use, and a learner who guesses wrong tends to keep the error. Hearing the word in its own sentence, and then alone, settles it.

Questions about reading The Child's Book of Nature

Common questions about reading The Child's Book of Nature by Worthington Hooker on this page, its source edition and its audio.

Is this the complete text of The Child's Book of Nature?

Yes. All 8841 sentences of Project Gutenberg eBook #58421 are kept, with a record of which sentences cover which part.

Which edition of The Child's Book of Nature is used?

Project Gutenberg eBook #58421, unabridged. The Project Gutenberg header, footer and licence are removed.

How long does The Child's Book of Nature take to read?

About 600 minutes of reading across 1769 sections of 5 sentences each, at an unhurried pace.

How to read The Child's Book of Nature section by section

How to work through The Child's Book of Nature section by section, using the audio and the tap-to-define vocabulary.

  1. Open a chapter

    Choose one of the 38 chapters of The Child's Book of Nature to begin.

  2. Read one section

    Each section holds 5 sentences; read it once through.

  3. Listen and tap

    Play the section aloud, then tap any unfamiliar word for its entry.

Vocabulary met early in The Child's Book of Nature

Words and structures a reader meets early in The Child's Book of Nature, each tappable for pronunciation and meaning.

Cents
A word that appears in the opening chapter of The Child's Book of Nature; the reader can tap it to hear it and see its dictionary entry.
Published
A word that appears in the opening chapter of The Child's Book of Nature; the reader can tap it to hear it and see its dictionary entry.
Harper
A word that appears in the opening chapter of The Child's Book of Nature; the reader can tap it to hear it and see its dictionary entry.
Brothers
A word that appears in the opening chapter of The Child's Book of Nature; the reader can tap it to hear it and see its dictionary entry.