News by Levels · Level 1 · For teachers
Teacher guide & answers
Could One Black Hole Become Two?
How to use these two pages
Give learners the student worksheet. It contains the story and questions, without the answers. Keep this guide for yourself. Use it to lead the activity and explain the answers afterwards.
Student worksheetA simple 15–20-minute lesson
- Before reading · 2 minutes
Show the title. Ask: “What do you think this story is about?”
- Read and answer · 8–10 minutes
Give out the student worksheet. Learners read for the main idea, then reread to answer the 2 questions. They can compare answers with a partner.
- Discuss and write · 5–8 minutes
Check the answers below together. Ask learners to point to the clue in the story, then finish with the open question.
Adjust the support: Let learners use word help or Level 1 if needed. For a challenge, compare the wording in another level. This activity is not a proficiency test.
Answers to the 2 questions
The question numbers match the student worksheet. Each answer includes a reason and the clue learners can find in the story.
What was the method?
Correct answer: B — Calculations
Why: This was theoretical work.
Clue in the story: Scientists have studied whether one black hole could split into two. They used calculations, not a telescope picture of a split. The University of Southern Denmark described the work on October 23.
What must fragments do?
Correct answer: C — Separate
Why: They must move apart.
Clue in the story: For ordinary black holes that do not spin, physical laws prevent this. Very fast spinning may leave a small possibility. Even then, the two parts must move apart instead of falling back together.
The open question: accept different answers
Ask learners: Explain the finding and its limit.
One possible answer: Theoretical possibilities do not establish an observed split.
This is an example, not the only correct answer. Look for a relevant idea, a reason and the learner’s own words. Learners can answer aloud or write one or two sentences.