4th Class Science Force, Work and Energy Question Bank

done Force Work and Energy Total Questions - 40

• question_answer1)
  The capacity to do work is called
  A)
   force.                           done clear
  B)
   energy. done clear
  C)
   machine.          done clear
  D)
        movement. done clear
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• question_answer2)
  The following diagram shows a man pushing a table. Now the man is applying ____ on the table.
  A)
   work                 done clear
  B)
        force done clear
  C)
   energy              done clear
  D)
        muscles done clear
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• question_answer3)
  If Ravi is able to move the table through a distance, then ____ is said to be done.
  A)
   work                             done clear
  B)
   force done clear
  C)
   energy              done clear
  D)
        muscles done clear
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• question_answer4)
  To do work, we need
  A)
   force.               done clear
  B)
        energy. done clear
  C)
   hands.                          done clear
  D)
   muscles. done clear
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• question_answer5)
  Which of the following requires more energy?
  A)
    done clear
  B)
    done clear
  C)
    done clear
  D)
    done clear
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• question_answer6)
  When we throw a ball into air, it falls back. The force responsible for this is
  A)
   muscular force. done clear
  B)
   gravitational force. done clear
  C)
   mechanical force. done clear
  D)
   none of these done clear
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• question_answer7)
  A football kicked by a boy rolls on the ground to some distance and stops. The force which stops the ball is
  A)
   muscular force. done clear
  B)
   gravitational force. done clear
  C)
   mechanical force. done clear
  D)
   frictional force. done clear
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• question_answer8)
  An electric heater converts
  A)
   heat energy to electrical energy. done clear
  B)
   electrical energy to heat energy. done clear
  C)
   light energy to electrical energy. done clear
  D)
   electrical energy to muscular energy. done clear
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• question_answer9)
  In a battery cell, energy is stored in the form of
  A)
   electrical energy. done clear
  B)
   muscular energy. done clear
  C)
   chemical energy. done clear
  D)
   solar energy. done clear
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• question_answer10)
  The given transformation takes place in
  A)
   electric bulb. done clear
  B)
   electric heater. done clear
  C)
  battery cell. done clear
  D)
   solar cell. done clear
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• question_answer11)
  Which of the following activities would need energy the most?
  A)
   Riding a bicycle up a hill done clear
  B)
   Walking done clear
  C)
   Riding a bicycle on a level ground done clear
  D)
   Doing homework done clear
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• question_answer12)
  Match the following devices in Column - I with their energy transformations Column - II correctly.

  Column - I		Column - II
  p.	Electric fan	i.	Electrical to light and sound
  q.	Electric bulb	ii.	Chemical to electrical
  r.	Petrol engine	iii.	Electrical to mechanical
  s.	Television	iv.	Electrical to light
  t.	Battery	V	Chemical to mechanical

  A)
   \[p-i,q-iv,r-v,s-iii,t-ii\] done clear
  B)
   \[p-v,\text{ }q-iii,\text{ }r-i,\text{ }s-ii,\text{ }t-iv\] done clear
  C)
   \[p-iii,q-iv,r-v,s-i,t-ii\] done clear
  D)
   \[p-iv,\text{ }q-iii,\text{ }r-i,\text{ }s-v,\text{ }t-ii\] done clear
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• question_answer13)
  The ultimate source of our energy is
  A)
   the sun.                        done clear
  B)
   coal. done clear
  C)
   wind.                done clear
  D)
        plants. done clear
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• question_answer14)
  Radha pushed a heavy table but failed to move it. Which of the following is TRUE of the above statement?
  A)
   Energy is not spent but work is done. done clear
  B)
   Energy is spent but work is not done. done clear
  C)
   Energy is not spent and work is not done. done clear
  D)
   Energy is spent and work is done. done clear
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• question_answer15)
  Which of the following statements is NOT true?
  A)
   Machines make work easy. done clear
  B)
   Machines increase the speed of doing work. done clear
  C)
   Machines change the direction of force done clear
  D)
   Machines produce energy. done clear
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• question_answer16)
  What are you exerting when you push or pull an object?
  A)
   Force                done clear
  B)
        Matter done clear
  C)
   Motion             done clear
  D)
        Mass done clear
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• question_answer17)
  Which of the following statements is NOT true?
  A)
   Friction makes a moving object slow down and stop. done clear
  B)
   Friction between two surfaces will produce heat. done clear
  C)
   Friction enables an object to stay in a stationary position. done clear
  D)
   Friction decreases if roughness of an object increases. done clear
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• question_answer18)
  Which of the following energies can be replenished?
  A)
   Solar energy done clear
  B)
   Wind energy done clear
  C)
   Water energy done clear
  D)
   All of these done clear
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• question_answer19)
  In which of the following activities is force used for pulling?
  A)
   Blowing air into a balloon done clear
  B)
   Cycling done clear
  C)
   Stretching a rubber band done clear
  D)
   All of the above done clear
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• question_answer20)
  Which energy conversion takes place during photosynthesis?
  A)
   Heat energy \[\to \] Light energy done clear
  B)
   Light energy \[\to \] Heat energy done clear
  C)
   Light energy \[\to \] Chemical energy done clear
  D)
   Mechanical energy \[\to \] Chemical energy done clear
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• question_answer21)
  The energy used for cycling comes from
  A)
   the chemical energy of food. done clear
  B)
   the heat energy of our body. done clear
  C)
   sound energy. done clear
  D)
   light energy. done clear
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• question_answer22)
  X enables work to be done. There are many forms of X. What is X?
  A)
   Energy              done clear
  B)
   The Sun done clear
  C)
   Heat                done clear
  D)
        Sound done clear
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• question_answer23)
  The figure given below shows a ball remaining stationary on the floor. What force enables the ball to remain in that position?
  A)
   Pushing            done clear
  B)
        Frictional done clear
  C)
   Magnetic           done clear
  D)
        Pulling done clear
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• question_answer24)
  The box below does NOT move because          
  A)
   both forces A and B are acting in opposite directions. done clear
  B)
   both forces A and B are acting in same direction. done clear
  C)
   there is no frictional force between the box and the ground done clear
  D)
   None of these. done clear
  View Solution play_arrow

• question_answer25)
  Work is done when you
  A)
   kick a foot ball. done clear
  B)
   hammer a nail. done clear
  C)
   push a door. done clear
  D)
   All of the above. done clear
  View Solution play_arrow

• question_answer26)
  Energy can be defined as
  A)
   the capacity to do work. done clear
  B)
   work done in unit time. done clear
  C)
   a push or a pull. done clear
  D)
   attraction between two oppositely charged particles. done clear
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• question_answer27)
  Which of the following is NOT a source of energy
  A)
   The sun.                       done clear
  B)
   Wind. done clear
  C)
   Water.              done clear
  D)
        Gravity. done clear
  View Solution play_arrow

• question_answer28)
  A football kicked by a boy rolls on the ground to some distance and stops. The force which stops the ball is
  A)
   muscular force. done clear
  B)
   gravitational force. done clear
  C)
   mechanical force. done clear
  D)
   frictional force. done clear
  View Solution play_arrow

• question_answer29)
  A stone thrown upwards comes down because of
  A)
   mechanical energy. done clear
  B)
   kinetic energy of the stone. done clear
  C)
   wind energy. done clear
  D)
   gravitational force of the earth. done clear
  View Solution play_arrow

• question_answer30)
  In which of the following cases do you have to do more work?
  A)
   Pushing a heavy table done clear
  B)
   Kicking a ball done clear
  C)
   Stopping a rolling ball done clear
  D)
   Pushing a cart done clear
  View Solution play_arrow

• question_answer31)
  The force which pulls a body towards the earth is called
  A)
   friction.                         done clear
  B)
   gravity. done clear
  C)
   tension.            done clear
  D)
        collision. done clear
  View Solution play_arrow

• question_answer32)
  Which of these comes from the sun?
  A)
   Solar energy done clear
  B)
   Thermal energy done clear
  C)
   Atomic energy done clear
  D)
   Geo-thermal energy done clear
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• question_answer33)
  Work is said to be done when ______ produces displacement of a body.
  A)
   force                done clear
  B)
        energy done clear
  C)
   distance            done clear
  D)
        speed done clear
  View Solution play_arrow

• question_answer34)
  Study the energy transformation shown here. In which of the following cases is this taking place?
  A)
   Glowing of an electric torch. done clear
  B)
   Photosynthesis in plants. done clear
  C)
   Generation of electricity in windmills. done clear
  D)
   Burning of wood done clear
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• question_answer35)
  Which energy is present in the objects given below?
  A)
   Muscular energy done clear
  B)
   Solar energy done clear
  C)
   Chemical energy done clear
  D)
   Heat energy done clear
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• question_answer36)
  When a pin wheel is placed against wind, it begins to spin. This proves that
  A)
   moving air has energy done clear
  B)
   pin wheel has life done clear
  C)
   pin has energy done clear
  D)
   moving air has no energy. done clear
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• question_answer37)
  What form of energy can be obtained from the sun?

  i- Light

  ii- Heat

  iii-Sound

  A)
   Only I and II done clear
  B)
   Only I and III done clear
  C)
   Only II and III done clear
  D)
   I, II and III done clear
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• question_answer38)
  What is the energy change that takes place when an electric bulb is switched on?
  A)
   Electrical energy is converted in to heat and light energy. done clear
  B)
   Electrical energy is converted into chemical energy. done clear
  C)
   Electrical energy is converted into sound energy. done clear
  D)
   Electrical energy is converted into mechanical energy. done clear
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• question_answer39)
  What is the energy change that takes place when television is switched on?
  A)
   Electrical energy is converted to heat and light energy. done clear
  B)
   Electrical energy is converted to chemical energy. done clear
  C)
   Electrical energy is converted to light and sound energy. done clear
  D)
   Electrical energy is converted into mechanical energy. done clear
  View Solution play_arrow

• question_answer40)
  In which of the following electrical energy is used to heat substances?
  A)
   Microwave oven done clear
  B)
   Radio done clear
  C)
   Television done clear
  D)
   Fan done clear
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