ICSE Class 8 Heat — practice questions
20 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice ICSE Class 8 Heat in the app →Heat is described in the chapter asHeat always flows fromThe SI unit of heat is theWhen a body absorbs heat its temperatureThe amount of heat Q absorbed by a body is directly proportional toSpecific heat capacity of a substance is the heat required to raiseThe SI unit of specific heat capacity isSpecific heat capacity of water isHeat required by 0.5 kg of water to rise by 10 degrees C is (c = 4200 J/kg/C)Hot water is at 80 deg C and cold water is at 30 deg C. When mixed, heat flows fromConduction is the transfer of heat in whichConvection is the transfer of heatRadiation differs from conduction and convection because radiationLand breeze blows from land to sea because at nightSea breeze blows from sea to land because during dayWhy are vacuum (Thermos) flasks effective at keeping liquids hot?Cooking pots are usually made of metal with a wooden handle becauseHot air balloons rise because hot air inside the balloonHeat required by 200 g of water at 4200 J/kg/C to rise by 5 deg C isWhy does sweating cool the body on a hot day?