Unit 9: The Universe's Mysteries
The Mystery of Black Holes
درس «Universe's Mysteries» — listening T/F×6 · infinitive vs gerund · remember/stop/try — p.42.
اضغط أي أداة — لتوليد اختبارات وفلاش كارد وملخصات وتجارب من الدرس تفاعلياً
درس «Universe's Mysteries» — listening T/F×6 · infinitive vs gerund · remember/stop/try — p.42.
- ✓يقرأ scientific passage عن black holes مع TTS
- ✓يطابق vocabulary: universe · singularity · gravity · galaxy · Milky Way · cosmic
- ✓يكمل fill-in · MCQ · 5 أسئلة فهم
1 Where do you think black holes come from?
2 What do you think happens if something falls into a black hole?
The Mystery of Black Holes — Ministry book
Black holes are among the most fascinating and mysterious objects in the universe. These cosmic giants have such strong gravitational pull that nothing can escape once it crosses the "event horizon".
But how do black holes form? Most black holes are created when massive stars, at least 20 times heavier than our sun, reach the end of their lives. When these giant stars run out of fuel, they collapse under their own gravity in less than a second. This creates an incredibly dense object where all the star's mass is compressed into an extremely small point called a singularity.
Astronomers have discovered that there are different types of black holes. Stellar black holes, formed from collapsed stars, are the most common. However, there are also supermassive black holes that can be millions or billions of times heavier than our sun. These giants sit at the center of most galaxies, including our own Milky Way.
One of the most amazing things about black holes is that they can actually bend space and time around them. Einstein predicted this effect over 100 years ago, and modern technology has finally allowed us to observe it directly. In 2019, scientists captured the first photograph of a black hole's shadow, proving many theories about these incredible objects.
Despite their fearsome reputation, black holes play an important role in shaping the universe. They help control how galaxies form and evolve, acting like cosmic vacuum cleaners that suck up nearby matter and energy.
a Match each word with the correct definition.
| A | B |
|---|---|
| 1. universe | ☐ the galaxy that contains our Solar System |
| 2. singularity | ☐ another word for the universe, often used in poetry or science |
| 3. gravity | ☐ a huge system of stars, gas, and dust held together by gravity |
| 4. galaxy | ☐ everything that exists — space, time, matter, and energy |
| 5. Milky Way | ☐ the point in a black hole where matter is crushed to infinite density |
| 6. cosmic | ☐ the force that pulls objects toward each other, like Earth pulling us down |
1 How are most black holes created?
2 What are the two main types of black holes mentioned?
3 What did scientists achieve in 2019 regarding black holes?
4 According to the text, what positive role do black holes play?
5 The passage mentions that the first photograph of a black hole's shadow was captured in 2019. What did this photograph help to prove?
Quiz
0 / 6Supermassive black holes are found:
Infinite density point: ___
2019 achievement:
Force that pulls objects together: ___
Most common type:
Black holes help galaxies: