Answer Keys finally returns through the atmosphere and lands as a common aeroplane Unit Module A Activity 1: Activity 3: b, a, d, f, e, c (from left to right) a 7; b 4; c 2; d 5; e 1; f 3; g Activity 2: Activity 4: a F; b F; c T a magnetic levitation; b electric cars; c fuel cell, carbon dioxide; d rocket planes a Information Technology (IT); b camcorder (camera recorder); c mainframe Activity 4: Suggested answers: digital appliances, digital cameras, camcorders, TVs, minicomputers, PCs, laptops, netbooks, palm-size scanners, mobile phones, DVD players, digital music players, mp3s, iPods Activity 5: Suggested answers: b W ho can now develop a rocket plane? c What are the advantages of using electric cars? d Where is there a Maglev train? e When will people fly in rocket planes? f Why are fuel cell cars non pollutant? Activity 6: a M aglev trains exist b T here are electric cars in Japan, USA and Europe c Electric cars not produce pollution d People use the fuel cell cars e The rocket plane does not function like an aeroplane It can land like common airplanes f Rocket planes are not working yet g We not have the Maglev in Argentina Activity 5: Students’ own answers Activity 6: Students’ own answers Unit Module B Activity 1: a F ; b F; c F; d T; e T; f T Unit Module A Activity 1: Activity 2: a N o, it isn’t There are Maglev trains in only a few places b In Japan, USA and Europe c Because they have zero emissions: they emit no pollutants d It is a car that converts gasoline into hydrogen, carbon dioxide and water with a transformer Thus, it does not pollute e It takes off as an ordinary plane, then accelerates into orbit around the planet, and a T; b F; c T; d T Activity 2: a reusable; b space; c exploration; d arguments; e expensive; f stars; g transportation reusable; transportation; stars; space; expensive; arguments; explorations English Toolkit - Technology Photocopiable © Ediciones Santillana S.A / Richmond 2011 Activity 3: Answer Keys Activity 3: Activity 3: a first; b high; c solutions; d global; e manned; f few a 2; b 5; c 3; d 1; e Activity 4: (from right to left) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto a planets, solar; b Sun; c Moon, satellite; d Earth; e air Activity 5: Students’ own answers a vast; b magnification; c sensitive; d allow; e gather Activity 5: Students’ own answers The automatic calculator was invented in 1623 by Wilhelm Schickard; the pendulum clock was invented in 1656 by Christian Huygens and the steam engine was invented in 1698 by Thomas Savery Unit Module B Unit Module A Activity 1: Activity 1: a T he mountains and craters on the surface of the Moon, the satellites of Jupiter and the starry Milky Way b T he word telescope is derived from the Greek words tele, from afar, and skopos, viewer c All telescopes gather radiation from distant objects over a large area and focus on it; so they increase the intensity of the radiation and allow the objects to be magnified d R efractors that use lenses, reflectors that use mirrors and catadioptrics that use a combination of both lenses and mirrors e Orbiting telescopes are used for the study of structures and systems too far to be seen clearly from Earth f Radio telescopes have helped vast new regions of the universe to become observable on Earth because radio waves penetrate dust and gas that obscure light These are the greatest and most powerful telescopes a R amjet Project consists in a spaceship which obtains its fuel from its surrounding space b P roject Dedalus was about launching a probe propelled by means of internal thermonuclear microexplosions c A spaceship with an anti-matter engine could go at light-speed propulsion d A ccording to some researchers, solar wind could be used to move a vehicle Activity 2: a light speed; b space ship; c anti-matter; d nuclear explosion; e solar wind; f sun light a light speed; b nuclear explosion; c anti-matter; d spaceship; e solar wind; f sunlight Activity 3: Students’ own answers Activity 2: a F; b T; c F; d F; e T; f F; g F; h T English Toolkit - Technology Photocopiable © Ediciones Santillana S.A / Richmond 2011 Activity 4: Answer Keys Activity 4: Activity 5: Students’ own answers Unit Module B Activity 1: a important, hopeful; b Students’ own answers; c Students’ own answers Activity 2: Students’ own answers Activity 3: a T; b T; c T; d F; e F Activity 4: a 5; b 6; c 1; d 2; e 3; f Activity 5: Activity 3: Students’ own answers Activity 4: a W here does energy occur? b W hat does electric power do? c What does ordinary electrical phenomenon depend on? d W hat electrical charges consist in? e How did electricity affect mankind? f How did mankind begin to understand electricity? Activity 5: a U n generador eléctrico es una fuente de electricidad, especialmente una que transforma la energía eléctrica o calórica en corriente eléctrica b U n foco es parte de una lámpara eléctrica c Un capacitador es un condensador d U n oscilóscopo es un tipo de oscilógrafo que muestra visualmente una onda eléctrica en una pantalla fluorescente e El sistema eléctrico es una batería de células electromecánicas para generar corriente eléctrica a probe; b administer; c give; d no pain device Unit Module B Activity 6: Activity 1: Students’ own answers Students’ own answers Activity 2: Unit Module A Activity 1: a everywhere in nature; b street lighting; c positive charges Activity 2: a 3; b 5; c 6; d 2; e 4; f a B ecause they have a greater understanding of the structure of matter b C omposite materials are complex combinations of fibres (such as carbon or glass) which are embedded in a matrix of plastic, ceramic or metal c They work through actuators and motors that behave like muscles, sensors that serve as English Toolkit - Technology Photocopiable © Ediciones Santillana S.A / Richmond 2011 rockets: cohetes; launch: lanzar; vehicle: vehículo; spaceship: nave especial; propulsion: propulsión; solar system: sistema solar; galaxy: galaxia; spacecraft: nave espacial; planetary: planetaria / o; atmosphere: atmósfera Answer Keys nerves and memory and communications and computational networks that represent the brain and the spine Activity 3: a … because of their extraordinary strength and lightness b … engine efficiency and pollution reduction in automobiles and trucks c …ladders, buildings and bridges d …alert you when they are overloaded Activity 4: Students’ own answers Photocopiable © Ediciones Santillana S.A / Richmond 2011 Activity 5: Students’ own answers English Toolkit - Technology