Classic Classic Quiz Energy and enegy resources by Madispry Madispry 16 played - 9 yrs ago Science test on energy KE and PE QUIZ 15 QUESTIONS hard 1 What is energy? The ability to cause a reactionA postive pull on an objetThe ability to cause changeAll above 2 What are some examples of energy? LightSoundChange in postion and motionAll above 3 Kinetic energy (KE) depends on the what of an object? Speed and energySpeed and massWeight and gravityAll above 4 What is potential energy (PE)? Stored energyElastic enrgyGravitational energyAll above 5 What forms of PE are there? Elastic energyGravitational energyChemical energyAll above 6 When an object falls what increases? When it rises what decreases? KE increases at fall and increases at risePE increases at rise KE increases at fallPe and ke are always decreasingNone of the above 7 What does work mean? Energy due to motiionInteractions between objects or particlesTransfer of energy that occurs when a force is applied over a distanceAll above 8 What is mechanical (m), sound (s) and thermal energy (t)? M is the enrgy due to electric current, s is energy sound carries and t is electromagenetic wavesM is the total energy of an object due to large scale motions and interactions, s is electric currents and t is energy due to the motion of particles that make up an objectM is the total energy of an object due to large scale motions and interactions s is energy sound carries and t is energy due to the motion of particles that make up an objectNone of the above 9 What is electric (e), radiant (r) and nuclear energy (n)? E is the energy that an electric current carries r is energy stored in the nucleus of the atom, and n is the energy electromagenetic waves carryE the energy electromagenetic waves carry r is the energy that an electric current carries n is energy stored in the nucleus of the atomE is the energy that an electric current carries, r the energy electromagenetic waves carry n is energy stored in the nucleus of the atomNone 10 What is the equation for total energy? Total energy=PE-KEPE+KE=total energyTotal energy =KE+PEAll of the above 11 Law conservation of energy cannot be what? Created or destroyedCreatedDistroyedAll of the above 12 What is friction? Is a force that resists the movment of 3 objectsIs a force that resists the sliding of 2 surfaces that are not touchingIs a force that resists the sliding of 2 surfaces that are touchingNone of the above 13 How can you reduce friction? LubricantsPushing a brake on somethingSlowing downAll of the above 14 Solve the blanks - when a boy is skating KE is ________ and thermal energy was_______. as he applied his brake KE was_________and thermal energy was _________ when he stopped KE was _______ and thermal energy was ____________ all times, total energy=____+________energy High, low, decreasing, increasing, low, high, KE, thermalLow, high, increasing, increasing, low, high, PE, KEHigh, low, low, high, increasing, decreasing, KE, thermalAll of the above 15 What is waste energy? Caused by friction and takes form of electric energyCaused by friction and takes form of thermal energyCaused by friction and takes form of mechanical energyCaused by friction and takes form of radiant energy A mistake in this Quiz ? Contact the author Commentaires
