We need transmission lines to carry electricity wherever we want it to go. So the electricity that is created in one place can be used to turn on a light many, many miles away!
Read the information and click on the images below to learn all about how electricity is transmitted across the United States.
Did you know that before the electricity reaches your house, it has to change voltage twice? Less electricity is lost when it is carried at a high voltage, so the voltage in the wire is increased for transportation. The voltage is then decreased when the electricity reaches neighborhood to make it usable in your home. Print out this info sheet to learn all about how we move electricity, and what is used to change the voltage of electricity that travels long distances.
Think you can name all the different parts of a transmission structure? Test yourself by printing out this sheet and naming the parts of a transmission structure.
What is the difference between a transmission line and a converter? Print out this fun activity to see how well you remember the steps for transporting electricity!
Put your knowledge to use and find key terms about transmission in this word find puzzle!
All of the power lines that you typically see utilize what is called alternating current technology. This is electric current that continually changes direction (hence the name "alternating!"). Direct current is current that flows in one direction and is steady.
Direct current is best for transporting large amounts of power over long distances. So, if you want to move electricity from a place where it is really windy to areas far away where there is no wind, direct current transmission lines are the way to go!