Understanding the Law of Conservation of Energy

The video tutorial explains that while most things in the world can be created or destroyed, energy is an exception. According to the law of conservation of energy, energy cannot be created or destroyed but only transformed from one form to another. The tutorial uses a light bulb as an example to illustrate this concept, showing how electromagnetic energy is converted into light and heat energy, demonstrating that no energy is lost, only changed in form.

What is the one thing in the world that cannot be created or destroyed?

• Molecules

• Atoms

• Energy

• Matter

According to the law of conservation of energy, what can happen to energy?

• It can change form

• It can be created

• It can disappear

• It can be destroyed

Which of the following is an example of energy changing form?

• A car parked

• A book on a shelf

• A light bulb heating up

• A stationary bicycle

What type of energy is formed from excess electromagnetic energy in a light bulb?

• Sound energy

• Heat energy

• Kinetic energy

• Potential energy

When a light bulb is turned on, what happens to the energy that is not converted into light?

• It changes into heat

• It remains as light

• It becomes sound

• It is lost