-
x

Meet New Friends!

Recommended friends are based on your interests. Make sure they are up to date.

Friends
Kidzworld Logo

Geothermal Energy

If you kept digging, what would you find? You'd probably find lots of worms, roots, and a few dog bones. But if you went really far down, you'd get geothermal energy.


Geothermal Energy - What Is Geothermal Energy?

If you take the word geothermal apart, you get "geo" which means earth and "thermal" which means heat, so geothermal means heat from the Earth. Geothermal energy taps into the Earth's internal heat to create electricity and to heat and cool buildings.


Geothermal Energy - A Look into the Earth

To get an idea of what Earth looks like, boil an egg and then cut it in half without peeling the shell. The yellow yoke is like the core of the Earth, the white part is the mantle of the Earth and the thin shell around the egg is the Earth's crust. The Earth's mantle consists of hot, liquid rock called magma (that's the stuff that shoots out of an erupting volcano) and the crust floats on this liquid.


If you're wondering what that has to do with geothermal energy, check this out: when water makes its way down close to the hot rock hundreds of feet below the surface, it turns to hot water or steam. The hot water can reach over 300 degrees Fahrenheit or 148 degrees Celsius - that's hotter than boiling water! This hot water from deep in the ground can be used to warm buildings, swimming pools and make electricity.


Geothermal Energy - Getting Steamy

Geothermal power plants use the steam from hot water to produce electricity. The steam rotates a turbine that activates a generator, which produces electricity. There are three types of geothermal power plants:

  • Dry Steam - The steam goes directly from underground wells to a power plant. The largest dry steam resource in the world is The Geysers, which is in California.
  • Flash Steam - These are the most common. They use reservoirs of water that are hotter than 360 degrees Fahrenheit (182 degrees Celsius). The hot water flows up wells in the ground under its own pressure and some of it turns to steam. This steam is separated from the water and used to turn a turbine.
  • Binary Cycle - These plants use water that is about 225 to 360 degrees Fahrenheit (107 to 182 degrees Celsius). The heat from the hot water is used to boil a working fluid (usually an organic compound that boils easily), which vaporizes in a heat exchanger (a device for transferring thermal energy from one fluid to another) and is then used to turn a turbine.

Geothermal Energy - Did U Know?

  • The US produces the most geothermal energy in the world.
  • In the US, geothermal electricity is generated in California, Nevada, Utah, Alaska and Hawaii.
  • Unlike wind and solar energy, geothermal resources are available 24/7.
Related Stories
2 Comments

Related Stories

Micro_hydroelectricity-micro
It's hard to imagine that water can be used to create electricity. The two are a dangerous combin...
When someone passes wind it can be stinky and loud. Wind that has been put to work at wind farms ...
Micro_solar-power-micro
Will we be forced to start writing with a pen and paper when the world's fossil fuel deposits ru...
F1004141320046

What Gives You a Boost of Energy?

  • Caffeine does the trick for me.
  • 23 sugar cubes is usually enough.
  • A chocolate bar.
  • A raw egg and milk shake.

Random In The Forums

-Oracle-
-Oracle- posted in Debating:
Where one teacher stands in front of 20 kids, each one having different strengths, different needs, different gifts, different dream. And then teach the same thing the same way? That's horrific.Curriculums are created by policy makers. Most of which have never taught a day in their life. Just obsessed with standardized tests. They think bubbling in a multiple choice question will determine success.
reply 20 minutes
Powerslave
Powerslave posted in Debating:
The education system isn't there to create intelligent individuals and definitely not there to teach, it is there to create useful pawns for the elites, we are all brainwashed from day one. So yes I think they should change,  but they most likely won't.
reply about 2 hours
naruto200
naruto200 posted in Debating:
If you are a student in middle through high school these days you might  not feel like you are learning a lot of things that you will use after high school. The truth is, you aren't. Are they teaching you how to obtain money? How about  how to manage a check account? Or how about this are you learning how to handle a job interview in school. No? Maybe you have learned  one of them perhaps if you count elementary, but dude we're way past elementary and ever since the fith grade I aint lean nothing about anything i'l use outside of school since 5th grade. Oh wait, I DID learned something. I learned that half the stuff they teach us are not even on the tests we HAVE TO take. Probably because we should know the information already, but the thing is MOST of us in the U.S don't know half of it or care because it's all useless to us so it has to be re taught again. Some teachers are kind enough to re teach old lessons but  not all do, and I can't believe that i discovered that all it takes to make things right is for a student to confront a teacher in class to ask them to teach me things that we will use in our future, not yesterdays future. If no one does that IN CLASS, IN FRONT of the class. You are just one student, you might save yourself but not the others if you do this alone.. If other unsaved students slow down the class you won't learn a thing. What do you think? about this subject?
reply about 3 hours
KITTENLOVER102
KITTENLOVER102 posted in General:
it is a colorful tiger
reply about 3 hours
aditicoolsome
aditicoolsome posted in General:
its me 
reply about 3 hours