Electric power transmission

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/electric-power-transmission

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 is the energy loss minimization?High voltage reduces current, thereby minimizing resistive (I²R) energy losses
2. What is the conductor material?Typically uses bundled aluminum conductor steel-reinforced (ACSR) cables
3. Why do power lines use such high voltages?High voltages reduce energy loss. When electricity travels far, using a higher voltage means less power is wasted as heat, so more electricity reaches homes and businesses.
4. How does alternating current help electricity travel far?Alternating current can be easily changed to higher or lower voltages with transformers. This lets power be sent at a very high voltage to travel far and then lowered to a safe level for homes and schools.

Kilovolt (kV): A unit of electrical potential equal to 1,000 volts, used to measure high voltages.
HVDC Transmission: High-Voltage Direct Current transmission, used for very long distances or undersea cables.
Smart Grid: An modernized electrical grid using digital technology to improve efficiency, reliability, and sustainability.