Conservation of Energy

According to the law of conservation of energy, what happens to the total energy of a system as energy transformations occur?

• The total energy of a system remains constant.

• The total energy of a system fluctuates.

• The total energy of a system increases.

• The total energy of a system decreases.

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

What is the principle that states that energy cannot be created or destroyed, only transferred or transformed?

• Energy Conservation Law

• Principle of Energy Transformation

• Law of Energy Creation

• Law of Conservation of Energy

Give an example of an energy transformation that obeys the conservation of energy principle.

• Bicycle riding

• Car running

• Walking

• Swimming

Tags

NGSS.HS-PS3-3

What are the different forms of energy that can be involved in energy transformations?

• mechanical energy, thermal energy, chemical energy, electrical energy, electromagnetic energy, nuclear energy, and sound energy

• potential energy, kinetic energy, gravitational energy, light energy, magnetic energy, radiant energy, and electrical energy

• thermal energy, chemical energy, electrical energy, electromagnetic energy, nuclear energy, and sound energy

• mechanical energy, thermal energy, chemical energy, electrical energy, electromagnetic energy, and sound energy

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-3

Describe a scenario where energy is transformed from one form to another, but the total energy of the system remains constant.

• Conversion of mechanical energy to sound energy in a musical instrument

• Conversion of chemical energy to heat energy in a combustion reaction

• Conversion of solar energy to electrical energy in a solar panel

• Conversion of electrical energy to light energy in an incandescent light bulb

Tags

NGSS.HS-PS3-3

During energy transformations, energy is never _______.

1. 
   

• released as heat

• used to increase an objects potential energy

• completely transformed

• created or destroyed

Tags

NGSS.HS-PS3-3

The sum of the kinetic energy and the potential energy of the objects in a system is called _______.

• thermal energy

• complete energy

• energy maximum

• mechanical energy

Tags

NGSS.MS-PS3-4

One food calorie is equivalent to approximately _______.

1. 
   

• 4 J

• 40 J

• 400 J

• 4,000 J

Which is NOT a form of energy?

• friction

• thermal

• electrical

• chemical