Vocabulary Science and Technology (794135), страница 9
Текст из файла (страница 9)
What ten-letter noun in the readingmeans “something used in the placeof another”?_________________________sWORD FORMSComplete the chart below with different forms of the verbs apply and investigate.APPLYPAST-TENSE VERB:NOUN FORM:_______________________________________ONE WHO DOES:___________________INVESTIGATEPAST-TENSE VERB:NOUN FORM:_________________________________________ONE WHO DOES:____________________UNDERSTANDING THE READINGWrite T or F to show whether each statement is true or false.1.
_____ Modern research got its start with the discovery ofthe wheel.2. _____ Scientists involved in applied research are trying to solvespecific problems.3. _____ The words knowledge and information are synonyms.4. _____ Basic researchers try to discover more about the lawsof nature.66SYNONYMS1Complete the crossword puzzle withwords from the reading. Clue wordsare synonyms (words with a similarmeaning) of the answer words.34ACROSSA2IDE1. targeted4. precise6. data7. improved56FIDOWN2. tools; devices3.
to rely7B5. to concentrateANTONYMSFirst unscramble the words from the reading. Then draw a line to connect each wordwith its antonym (word that means the opposite).1. ALARUNT____________________a. miniature2. RUTE____________________b. subtract3. TRACECAU____________________c. synthetic4. NOURSOME____________________d. useless5. CATRICLAP____________________e. false6. DAD____________________f. imprecise67UNIT 3Lesson 5SCIENCE AND TECHNOLOGY WORDSHow Does a Radio Work?The space around you may lookempty—but it isn’t. At all times it isfilled with radio frequency wavesfrom nearby radio stations. They arecausing minute vibrations in all themetal objects in the room. But youcan hear these vibrations only if youturn on your radio.2.
The tuner selects the frequency ofthe desired station and blocks outthe frequencies of other stations.Your radio picks up the radiowaves of the station you want to hearand turns them into sound waves.How does it do this?4. The program current, which isvery weak, must be amplified untilit can operate the loudspeaker.This is done by transistors.1. Your radio’s antenna (or aerialwire) picks up all the radiofrequency currents that are in theair around it.5.
The loudspeaker changes theprogram current into sound waves.These sound waves are a copy ofthose in the broadcasting studio.AM (amplitude modulation) Radio WaveFM (frequency modulation) Radio Wave3. Now your radio separates theprogram current from the carriercurrent. Electronic devices blockoff the carrier current so that onlythe program current is left.WORD SEARCH1. What eleven-letter plural noun in thereading means “tiny electronic devicesmade from semiconductors that controlthe flow of electrical current”?___________________________t2.
What eight-letter plural noun in thereading means “places with electronicequipment for sending out radio orTV programs”?68___________________________s3. What five-letter adjective in thereading means “made of a chemical—such as iron, gold, or aluminum—thatconducts electricity”?___________________________mANTONYMSCircle a letter to show the antonym (word that means the opposite) of the boldfaceword in each sentence.1. Nearby radio stations fill the air around you with radiofrequency waves.a.
overlappingb. farawayc. powerful2. In order to operate the loudspeaker, the program current mustbe amplified.a. ignitedb. refinedc. silenced3. The tuner selects the frequency of the desired station.a. bestb. unwantedc. chosen4. The space around you is never empty.a. quietb. occupiedc. hollowANALOGIESAnalogies are statements of relationship.
Figure out the relationship between the firsttwo words. Then show the same relationship by completing the analogy with a wordfrom the reading.1. Tongue is to tasteas ear is to_________________________.h2. Celebrate is to celebrationas vibrate is to_________________________.v3. Copy is to copiesas frequency is to_________________________.f4. Gather is to scatteras combine is to_________________________.s69SYNONYMS1Use the clues to help you solve the crosswordpuzzle. Clues are synonyms (words with asimilar meanings) of words from the reading.23CV4M5ACROSSCS1.
to duplicate3. microscopic6. runsDOWN1. generating2. pulses6O4. transforms5. choosesPARTS OF SPEECHIn a different context, the same word can be a different part of speech. Notice howthe boldface words from the reading are used in each sentence. Then identify thepart of speech by writing noun (names a person, place, or thing), verb (showsaction), or adjective (describes a noun or pronoun).1. ____________________Is that information current or out-of-date?2. ____________________Will you take a minute to answer myquestion?3. ____________________Ed programs his computer to do specializedtasks.4. ____________________The TV programs I like are on Tuesdaynight.5.
____________________Minute particles of dust covered thefurniture.6. ____________________The North Atlantic current moves acrossthe ocean from Newfoundland to England.70UNIT 3SCIENCE AND TECHNOLOGY WORDSLesson 6The Amazing RhinoRhinoceroses are quiet, slowmoving, retiring animals—until theyare cornered. If that happens, watchout! They can charge an enemy at30 miles an hour.These huge, thick-skinned animalshave heavy bodies and one or twolarge horns above their nostrils.
Theirlegs are short, and each foot hasthree toes. They are hoofed animals,related to horses.The smallest rhinoceros, theSumatran, usually weighs less thana ton and is about four feet high atthe shoulder. The largest is the Africanwhite rhinoceros. It may weigh threeand one-half tons or more and standsix and one-half feet high.Some kinds of rhinoceroses havevery long horns. The longest oneever measured was 621/2 inches. Thehorns are made of closely packedmasses of tough hairs.
Their bodies,however, are usually hairless.There are five different kinds ofrhinoceroses living today. Two ofthese live in Africa, and the otherthree kinds live in Asia. In captivity,rhinoceroses typically live to be about50 years old.Rhinoceroses do not hunt otheranimals. As herbivores, they eat onlygrass and other plants. They usuallytravel alone, but are sometimes foundin small family groups.
The femalebears only one offspring at a time.WORD SEARCH1. What eight-letter noun in the readingmeans “part of the body to which an armor foreleg is connected”?_________________________s2. What seven-letter adjective in thereading means “of the same familyor kind”?_________________________r713. What eight-letter plural noun in thereading means “openings in the nosethrough which people and some animalsbreathe and smell”?_________________________nANTONYMSComplete the crossword puzzle with words fromthe reading. Clue words are antonyms (words withopposite meanings) of the answer words.Use a dictionary if you need help.2ACROSSR13QT2.
aggressive4. thin46. weightless8. carnivores5DOWNM67HTA1. noisy3. wispy5. female8H7. belowSYNONYMSCircle a letter to show the synonym (word with a similar meaning) of each boldfaceword from the reading.1. The foot of a rhinoceros has three toes.a. knucklesb. hoovesc. digits2. Rhinoceroses can charge at 30 miles an hour.a. postponepaymentb. launch a runningattackc. take boundingleaps3. If a rhinoceros is cornered, its enemy better watch out!a. foe72b. competitorc.
prey4. Rhinoceroses are sometimes found in small groups.a. occasionallyb. rarelyc. typically5. The horns are made of closely packed masses of tough hairs.a. wovenb. densec. enclosed6. Their bodies, however, are usually hairless.a. by the wayb.
likewisec. neverthelessPROPER ADJECTIVESYou read that the smallest rhinoceros is Sumatran. That word is a proper adjectivedescribing someone or something from Sumatra—a large island in Indonesia. On thelines below, write the proper adjective that can be made from each place name.Remember that proper adjectives are always capitalized!1. Brazil _____________________5. England ___________________2.
Europe ____________________6. Russia _____________________3. France ____________________7. China ______________________4. Australia __________________8. Scotland ___________________WORD FORMSFind the word captivity in the reading. You can probably figure out that captivity means“kept in a zoo” or “the condition of being held by force” as it is used in the reading.To complete the sentences below, unscramble some different forms of the word captivity.1. The zoologists tried to RAPTCUE _________________________a rhinoceros.2. The TAPEVIC _________________________ rhino was loaded ontoa truck.3. The rhino’s ROTPACS _________________________ were carefulnot to injure the animal.73UNIT 3Lesson 7SCIENCE AND TECHNOLOGY WORDSScience in the News: Avoiding Potholes on the Information HighwayJean Armour Polly, a formerlibrarian, has been working withcomputers and modems for 20years. In a 1992 magazine article,she coined the term “surfing theInternet.” Today, she is a best-sellingauthor.
Her book, The Internet Kidsand Family Yellow Pages, has helpedhundreds of thousands of youngpeople learn to navigate the Netsafely, comfortably, and productively.The book has recently come out inits fifth edition.Mrs. Polly says that the bestWeb sites for young people shouldmeet certain criteria: They shouldhave authority, currency, and anacceptable “signal-to-noise ratio.” Noless importantly, the sites shouldbe age-appropriate. Specifically, theauthor gives this advice:• Authority Ask yourself who isbehind the site.
Is it a reputablesource such as National Geographicor someone you never heard of?Make sure the information comesfrom a source you can trust.• Currency Some pages have beenon the Web for years withoutbeing updated. Look for the “lastupdate” notation on the site’sfront page.• Age-appropriate To learn abouthow the heart works, middle schoolstudents don’t need a lengthy articlefrom a professional medical journal.Instead, find a well-illustratedarticle written at a lower level.• Acceptable mix of signal to noiseAvoid too many distractions. Thingssuch as ads, pop-up windows, andmusic that can’t be turned off soonbecome annoying. They detractfrom the value of the site.THE GRIZZLY BEARLASTCHANCETRY THISDON’TMISS OUTBUY MELOOKHERESHOP, SHOP,SHOP!!!If you’d like, you can contact Mrs.Polly at www.netmom.com.WORD SEARCH1.
What seven-letter plural noun in thereading means “electronic devices thatconnect computers via a telephone line”?74_________________________m2. What eight-letter proper noun in the readingmeans “a network linking computers all overthe world by satellite and telephone, connectingusers with service networks such ase-mail and the World Wide Web”?_________________________I3. What twelve-letter plural noun in thereading means “things that interferewith concentration”?_________________________d4. What four-letter noun in the readingmeans “the place where certaininformation can be found on the Web”?_________________________sANALOGIESAnalogies are statements of relationship.
![](https://s.studizba.com/z.php?f=/templates/si/i/noavatar.png&w=100&h=100&t=1"){kind=avatar}
