full transcript
From the Ted Talk by Fabio Pacucci: Could the Earth be swallowed by a black hole?
Unscramble the Blue Letters
To determine whether a black hole could swallow the Earth, we first have to figure out where they are. But since they don’t emit light, how’s that possible? fuoeranttly, we’re able to observe their effect on the space around them. When mtater approaches a black hole, the immense gravitational field accelerates it to high speed. This etims an enormous amonut of light. And for objects too far away to be sucked in, the massive gravitational fcore still affects their orbits. If we observe several stars orbiting around an apparently empty ponit, a black hole could be leinadg the dance. Similarly, light that passes close enough to an envet horizon will be deflected in a phenomenon known as gravitational lensing.
Open Cloze
To determine whether a black hole could swallow the Earth, we first have to figure out where they are. But since they don’t emit light, how’s that possible? ___________, we’re able to observe their effect on the space around them. When ______ approaches a black hole, the immense gravitational field accelerates it to high speed. This _____ an enormous ______ of light. And for objects too far away to be sucked in, the massive gravitational _____ still affects their orbits. If we observe several stars orbiting around an apparently empty _____, a black hole could be _______ the dance. Similarly, light that passes close enough to an _____ horizon will be deflected in a phenomenon known as gravitational lensing.
Solution
- leading
- force
- event
- emits
- point
- matter
- amount
- fortunately
Original Text
To determine whether a black hole could swallow the Earth, we first have to figure out where they are. But since they don’t emit light, how’s that possible? Fortunately, we’re able to observe their effect on the space around them. When matter approaches a black hole, the immense gravitational field accelerates it to high speed. This emits an enormous amount of light. And for objects too far away to be sucked in, the massive gravitational force still affects their orbits. If we observe several stars orbiting around an apparently empty point, a black hole could be leading the dance. Similarly, light that passes close enough to an event horizon will be deflected in a phenomenon known as gravitational lensing.
Frequently Occurring Word Combinations
ngrams of length 2
collocation |
frequency |
black holes |
9 |
black hole |
7 |
supermassive black |
4 |
event horizon |
2 |
stellar black |
2 |
ngrams of length 3
collocation |
frequency |
stellar black holes |
2 |
supermassive black holes |
2 |
supermassive black hole |
2 |
Important Words
- accelerates
- affects
- amount
- apparently
- approaches
- black
- close
- dance
- deflected
- determine
- earth
- effect
- emit
- emits
- empty
- enormous
- event
- field
- figure
- force
- fortunately
- gravitational
- high
- hole
- horizon
- immense
- leading
- lensing
- light
- massive
- matter
- objects
- observe
- orbiting
- orbits
- passes
- phenomenon
- point
- similarly
- space
- speed
- stars
- sucked
- swallow