Power line

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/power-line

1. What are power lines and why do we need them?
2. How do power lines carry electricity over long distances without losing too much?

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What are power lines and why do we need them?Power lines are big wires that carry electricity from power plants to homes and businesses. They keep our lights, toys, and computers working.
2. How do power lines carry electricity over long distances without losing too much?They use very high voltage, like 100,000 to 765,000 volts, so the current is small. This reduces energy loss while the power travels long distances.

Insulator: A material that prevents the flow of electricity, used to mount conductors on poles and towers.
Transformer: A device that changes the voltage of alternating current electricity, crucial for transmission and distribution.
Smart Grid: An modernized electrical grid that uses digital technology to manage electricity delivery and consumption more efficiently.