Conservation of Energy Quiz

In every energy transformation, some energy is always “lost” as ____ energy.

• chemical

• radiant

• electrical

• thermal

According to the law of conservation of energy, the total amount of energy in the universe ____.

• remains constant

• changes constantly

• increases

• decreases

Work _____ energy.

• reduces

• reflects

• transfers

• stops

Which equation is correct?

• mechanical energy = kinetic energy – potential energy

• mechanical energy = potential energy – kinetic energy

• mechanical energy = kinetic energy + potential energy

• mechanical energy = kinetic energy × potential energy

When two surfaces interact, some mechanical energy leaves the system as thermal energy due to ________.

• surrounding heat

• water

• friction

• fusion

Which of the following does NOT reduce friction?

• grease

• cotton

• oil

• graphite

When you put on the brakes of a bicycle, friction causes some of the mechanical energy to transfer to thermal energy.

• TRUE

• FALSE

According to the law of conservation of energy, energy can be created destroyed.

• TRUE

• FALSE

……………………………. is The sum of the potential energy and the kinetic energy in a system

(a)  

State that energy is always transferring from one form to another, energy is not

created or destroyed.

(a)