Science - World Scholars Cup Exam Questions With 100% Correct Answers

Science - World Scholars Cup Exam Questions With 100% Correct Answers Batteries - answerCathode, Electrolyte, Anode (Top to bottom). Creates energy through attraction of charges Discharge - answerConverts chemical energy to electrical energy Wireless Charging - answerUses electromagnetic field that sends electrodes to the battery. Done through two induction coils, one on each device. Electrodes travel from one coil to another Exploding Batteries - answerExplodes due to overheating a small filament. Most likely are Lithium batteries Silicon Anode - answerCan store 20x more charge than normal batteries Lithium Metal - answerCan charge more but can explode Bacteria Battery - answerUses EXO electrogens (Bacteria) to get energy. Harness the energy through paper. Energy from cellular respiration. Direct Current - answerCurrent flows none stop left to right Alternate Current - answerCurrent flows forward then stops a little repeated. Better for long distance British Plugs - answerDue to low copper from ww2 changed plugs to use less copper Air Conditioning - answerUses liquid to cool down air that is then sent out afterwards Heating - answerTakes air from outside, heats it over chemical "propane" and sends out air again. Which is worse, Heating or Cooling? - answerHeating as accounts for 7 - 10% of greenhouse gasses Air Purifier - answerTakes in air and removes dust and particles Activated Carbon (Air Purifier Method) - answerRemoves dust through magnetic from the air Ionizing Purifier - answerMakes dust stick to ground and out of air