Question

The law of conservation of energy states that

A:Energy is always created and destroyed
B: Energy cannot be created or destroyed
C: Energy is unable to change forms
D: Energy should be saved as often as possible

Answer 1

The law of conservation of energy states that energy cannot be created or destroyed. This means that the total amount of energy in a closed system remains constant over time. However, energy can change from one form to another.

For example, when you turn on a light bulb, electrical energy is converted into light energy. The total amount of energy in the system remains the same, but it has changed from electrical energy to light energy.

Similarly, when you drop a ball, its potential energy is converted into kinetic energy as it falls. Again, the total amount of energy is conserved, but it has changed from potential energy to kinetic energy.

So, the correct answer is B: Energy cannot be created or destroyed.

Step-by-step explanation:

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