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Quizzes Quiz

Practice Test
  1.The total amount of potential and kinetic energy in a system is called __________.  
  a.   mechanical energy  
  b.   energy maximum  
  c.   complete energy  
  d.   thermal energy  
  2.__________ is the energy stored in an object due to its position.  
  a.   Kinetic energy  
  b.   Potential energy  
  c.   Entropy  
  d.   Thermal energy  
  3.Which of the following is NOT a form of energy?  
  a.   chemical  
  b.   friction  
  c.   electrical  
  d.   thermal  
  4.How much kinetic energy does a moving object have if its mass is 100 kg and it is moving at a speed of 5 meters per second?  
  a.   125,000 J  
  b.   2,500 J  
  c.   250 J  
  d.   1,250 J  
  5.As energy transformations occur within a system, the total energy of the system __________.  
  a.   increases  
  b.   remains constant  
  c.   is transferred out of the system  
  d.   decreases  
  6.By what process does the Sun produce enough energy to warm Earth?  
  a.   catabolism  
  b.   transformation of thermal energy into kinetic energy  
  c.   nuclear fusion  
  d.   glycolysis  
  7.Without changing the mass of a moving object, doubling its velocity will __________ its kinetic energy.  
  a.   quadruple  
  b.   double  
  c.   triple  
  d.   not affect  
  8.Which of the following objects has kinetic energy?  
  a.   a ball rolling across the floor  
  b.   a sunny windowsill  
  c.   leaves lying on the ground beneath a tree  
  d.   a bicycle parked at the top of a hill  
  9.Carbohydrates and proteins each supply about __________ Calories of energy per gram.  
  a.   4  
  b.   400  
  c.   40  
  d.   14  
  10.What two factors determine how much potential energy an object has?  
  a.   speed and position  
  b.   speed and surface area  
  c.   speed and mass  
  d.   mass and position  
  11.What two factors determine how much kinetic energy an object has?  
  a.   position and mass  
  b.   speed and mass  
  c.   speed and position  
  d.   speed and surface area  
  12.Which of the following vehicles has the most kinetic energy?  
  a.   a 1,100-kg car traveling 60 km/h  
  b.   a 300-kg motorcycle traveling 100 km/h  
  c.   a 2000-kg truck traveling 50 km/h  
  d.   a 900-kg car traveling 80 km/h  
  13.Which of the following statements about an apple falling from a tree is true?  
  a.   Its kinetic and potential energies remain constant.  
  b.   Its kinetic energy decreases and its potential energy increases.  
  c.   Its potential energy decreases and its kinetic energy increases.  
  d.   Its mechanical energy increases.  
  14.__________ is energy stored by things that stretch or compress.  
  a.   Elastic potential energy  
  b.   Chemical kinetic energy  
  c.   Gravitational potential  
  d.   Elastic kinetic energy  
  15.__________ is the ability to cause change.  
  a.   Work  
  b.   Momentum  
  c.   Power  
  d.   Energy  
  16.One food Calorie is equivalent to approximately __________.  
  a.   4 J  
  b.   40 J  
  c.   4,000 J  
  d.   400 J  
  17.The law of conservation of energy states that __________.  
  a.   energy cannot be created or destroyed  
  b.   energy can be created and destroyed but cannot change form  
  c.   energy is not created or destroyed and its form is constant  
  d.   when energy is transformed, the total energy of a system is less than it was before the change  
  18.Which of the following objects has potential energy?  
  a.   a glass sitting on a table  
  b.   a bicycle coasting down a hill  
  c.   a bowling ball knocking over a pin  
  d.   a ball rolling across the floor  
  19.The __________ is the SI unit of energy.  
  a.   ampere  
  b.   watt  
  c.   volt  
  d.   joule  
  20.A baseball is hit into the air with a bat. When does the baseball have the greatest gravitational potential energy?  
  a.   when the mechanical and kinetic energies of the baseball are equal  
  b.   when it reaches its highest point  
  c.   when it hits the ground  
  d.   when it leaves the bat  

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