What does the law of conservation of energy state?

• Energy can be created and destroyed.

• Energy cannot be created or destroyed.

• Energy can only be created.

• Energy can only be destroyed.

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What is the primary role of generating facilities?

• To store energy for future use.

• To destroy excess energy.

• To transform existing energy into a more useful form.

• To create new energy.

Which of the following is NOT a source of energy mentioned in the video?

• Natural gas

• Solar

• Coal

• Wind

What happens to energy during the transformation process?

• It can be destroyed.

• It can be completely lost.

• It can be wasted.

• It can be created.

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What is a common example of energy transformation mentioned in the video?

• Engines converting fuel to motion

• Solar panels converting sunlight to electricity

• Batteries storing energy

• Light bulbs converting electrical energy to light

What type of energy do older incandescent light bulbs waste?

• Electrical energy

• Mechanical energy

• Light energy

• Heat energy

Why are LEDs considered more efficient than incandescent bulbs?

• They produce more heat energy.

• They use more electrical energy.

• They transform nearly all electrical energy into light energy.

• They are cheaper to produce.

What is the main reason for energy waste in older light bulbs?

• They transform a lot of electrical energy into heat energy.

• They do not use enough electrical energy.

• They are too bright.

• They are made of inefficient materials.

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