TMA4/SED413

My TMA Home TMA Results My Pending TMA Quick Help TMA Quiz Questions TMA: TMA4/SED413 Matric Number:  SCORE=9.50 SED413 - Science, Technology and Society Dr Afolabi S.S (safolabi@noun.edu.ng ) 1 The energy possed by a moving body is __ heat energy kinetic energy potential energy electric energy 2 when a wood is burnt, the chemical energy in it is converted to ___ solar energy light energy  heat energy  bright energy 3 When a mobile phone is switched on to work, the ___ energy is converted to ___ energy chemical, heat heat, chemical electrical, chemical chemical, electrical 4 Which of these is a renewable energy? sun wind tide A - C above 5 The energy from the sun is called ___ energy solar sun heat light 6 Which of these source of energy may be dangerous to life? solar energy geothermal energy wind energy hydro energy 7 Fossil fuels are made up of ___ oxygen carbon hydrogen halogen 8 Carboniferous period is characterised by ___ sulphur food carbon sweet fruits shallow seas and swampy forest 9 Carboniferous period dates back to ___ years 1million 3million 30million 300million 10 ___ is a resource that does not renew itself at a sufficient rate for sustainable economic extraction. finite energy non-renewable energy renewable energy extraction energy 11 Which of these can be used to generate electricity? I) coal; II) wind; II) river All the above I only I and II only II and III only 12 Which of these is not a component of natural gas? methane ethane propane oxygen 13 Radioactive elements are a product of ___ nuclear power land formation green-house emission solar energy 14 ___ found that electric current creates a magnetic field Faraday Orsted Lewis Roy 15 If the thumb and the first two fingers are held mutually perpendicular, the second finger points to the magnet direction of current the force the thumb 16 Conductor with current in a magnetic field generates ___ current magnetic force electrical force force of movement 17 __ is the branch of science that deals with electricity and magnetism electromagnetism electricity electrolysis optics 18 Which of these is the effect of evaporation? pressure gas evolving cooling condensation 19 A volatile liquid in the hand makes it cool, This is because ___ is taking place burning cooling vapourisation condensation 20 __ discovered that movement of a magnet towards or away from a magnet induces electric current Lewis Eistein Faraday Newton