Science Home Product Information Site Map Search Contact Us   Glencoe Online
Quizzes Quiz

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

McGraw-Hill / Glencoe
The McGraw-Hill Companies