Semester 2 Review (Energy and Solar System

What is energy?

• The ability to do work.

•   The process of creating energy.

• 
  

  The process of making food.

• The heat transfer from hot area to cold area.

Which of the following has kinetic energy?

 

      L: stationary bus

      M: wind

      N: a raised object

      O: flowing water

 

     

• L and N only

• M and O only

• L, M and N only

• M, N and O only

We depend directly and indirectly on the _________ as the main source of energy for

       survival?

    

     

• moon

• sun

• earth

• natural satellite

Which of the following correctly completes the energy conversion of Bentley sawing

      the wooden plank?

 

       Chemical Potential Energy  ------>     Kinetic Energy  ------> ..........................

                                              

• kinetic energy  --->     heat energy + sound energy

• kinetic energy + heat energy ---->  sound energy

• gravitational potential energy  

  ---> heat energy + sound energy

• chemical potential energy ---->                gravitational potential energy + heat energy

Which of the following makes use of the conversion of electrical energy to light energy?

 

      

• a lit gas stove

      

•     a mobile phone charger

    

•        a pair of earphones

        

            

•        a torchlight

            

Which of the following forms of energy is primarily associated with the motion of objects?

• Chemical Energy

• Thermal Energy

• Kinetic Energy

• Potential Energy

What type of energy is stored in food and released during digestion?

• Mechanical Energy

• Chemical Energy

• Electrical Energy

• Nuclear Energy

Which of the following scenarios demonstrates the conversion of potential energy to kinetic energy?

• A car parked on a flat road

• A battery powering a remote control

• A ball at the top of a hill rolling down

• A light bulb being turned on

What is the primary source of energy for photosynthesis in plants?

• Carbon dioxide

• Water

• Sunlight

• Soil nutrients

1.A pulling and pushing force exerted by magnets is known as ……………..

• A. gravitational force
• B. frictional force
• C. magnetic force
• D. electrostatic force