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Assessment
What is the principle of energy conservation?
Energy cannot be created or destroyed, only transformed.
Energy can be created but not destroyed.
Energy can be destroyed but not created.
Energy can be both created and destroyed.
In a closed system, what happens to total energy when work is done?
Total energy increases.
Total energy decreases.
Total energy remains constant.
Total energy fluctuates randomly.
Which of the following scenarios illustrates the conservation of energy?
A pendulum swings back and forth without losing height.
A light bulb converts electrical energy to light and heat.
A car comes to a stop and loses all its energy.
A battery discharges without any energy transfer.
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