Hale's law

High school (ages 12+)
Space & Astronomy

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/hale-s-law

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. Who discovered Hale's law?George Ellery Hale and Seth Barnes Nicholson
2. What is the empirical law for?The orientation of magnetic fields in simple bipolar solar active regions
3. What is the cyclical reversal?The pattern of leading polarities reverses with each approximately 11-year sunspot cycle
4. What is Hale's Law about the Sun's magnetic spots?Hale's Law says that in each hemisphere the leading magnetic polarity of a sunspot pair is the same, and it flips each solar cycle.
5. Why do the magnetic polarities of sunspots change every 11 years?The magnetic polarities change every 11 years because the Sun's global magnetic field reverses its direction each solar cycle.

Solar Active Region: A localized region on the Sun's surface characterized by intense magnetic activity and often sunspots.
Solar Dynamo: A theoretical mechanism involving plasma motion that generates and sustains a star's magnetic field.
Toroidal Magnetic Field: A magnetic field that loops around in a ring-like or donut-like structure, typically found within stars.
Space Weather: The conditions in space that can affect Earth and its technological systems, driven by solar activity.