Water and Energy FAQs
(Frequently Asked Questions)


Have you ever wondered how much water a drippy faucet wastes? Or what happens if you get an electrical shock? Now you can find answers to these and other water and energy-related questions.

We post new questions and answers regularly, so check back!

Click on a question below to see the answer:

How much water does a person drink during their whole life?

Answer: A person takes in an average of 72,700 liters of water in his or her lifetime.

My teacher said that water can store energy, and that's why the oceans can hold the sun's heat and then use that heat to generate electricity. How does water store energy?

Answer: Water can store a lot of energy because it takes a lot of energy to increase its temperature by 1°C.

What's the difference between being "shocked" and "electrocuted?"

Answer: Someone can be shocked by electricity and survive. But when we say someone has been electrocuted, it means they have been killed by electricity.

I've seen workers trimming the trees in our neighborhood so they're not touching the power lines. Why do they do that?

Answer: If a tree branch touches a high-voltage power line, electricity from the line can make the branch so hot it catches fire. The fire can spread to nearby trees, plants, or buildings.

Can an insulating blanket on our water heater really make that much difference in our energy use?

Answer: Insulating your water tank can reduce energy losses by 25-40%.

What are the benefits of using CFLs? I see more and more of them in the stores.

Answer: Compact fluorescent light bulbs use 75% less energy and last 10 times longer than incandescent bulbs, while providing the same amount of light.

Is lightning as hot as the sun?

Answer: A lightning bolt is 3 times hotter than the sun.