Quiz for Black Holes (Grade 5-8)
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Question 1 of 21
1. Question
Scientists used _____ telescopes spread across the whole Earth, called the Event Horizon Telescope (EHT), to capture the first image of a black hole.
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Question 2 of 21
2. Question
The center of our Milky Way galaxy is very far away from our Earth. If an alien standing in the center of our galaxy shined a laser beam of light at Earth, it would take 27,000 ______ to reach Earth. Note it takes about 8 minutes for light to travel from the Sun to Earth.
CorrectIncorrectHint
remember what a light-year is
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Question 3 of 21
3. Question
Fill in the blanks — about the size of the M87 black hole when it is viewed from the Earth.
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1) We can one degree into 60 arcminutes and an arcminute into 60 arcseconds.
Hint: A 6 letter word starting with “d”, meaning: separate or be separated into parts.
2) The shadow cast by the M87 black hole is only about 40 micro arcseconds wide when viewed from the Earth. As a comparison, the full Moon as viewed from Earth is about 1/2 degree. So, the full moon is times wider than the M87 black hole when viewed from the Earth.
CorrectIncorrectHint
1 arcsecond = 1,000,000 micro arcseconds;
1/2 x 60 x 60 /(40/1000000)=? -
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Question 4 of 21
4. Question
Black holes are one of the most fascinating and mysterious objects in our universe. What does fascinating mean here?
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Question 5 of 21
5. Question
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Sagittarius A, the black hole at the center of our Milky Way galaxy, has a mass about 4 times that of our Sun.
CorrectIncorrectHint
A 7 letter word starting with “m”, meaning: the number equivalent to the product of a thousand and a thousand; 1,000,000.
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Question 6 of 21
6. Question
Fill in the blank
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Sagittarius A, the supermassive black hole at the center of the Milky Way, has a mass of roughly four million suns, and has a diameter about the between Earth and the Sun.
CorrectIncorrectHint
A 8 letter word starting with “di”, meaning: an amount of space between two things or people.
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Question 7 of 21
7. Question
The first image of a black hole, captured in 2019, has provided __________ to Albert Einstein’s theory of general relativity published over a hundred years ago.
CorrectIncorrectHint
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Question 8 of 21
8. Question
To get a good image of the black hole at the center of the galaxy M87 with a conventional telescope, its size would have to be as large as the _____.
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Question 9 of 21
9. Question
Why is the first image of a black hole so fuzzy?
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Question 10 of 21
10. Question
Anything that crosses the Event Horizon of a black hole needs to be traveling faster than the speed of ______ to escape from the black hole.
CorrectIncorrectHint
A 5 letter word starting with “l”, it is something that makes vision possible.
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Question 11 of 21
11. Question
In order to explore the sizes of black holes, we can look at two objects that we’re more familiar with: Earth and Jupiter. Use your math skills to fill in the blanks in the two questions below. (you can use a calculator; fill in the number rounded to the nearest whole number)
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1) To make Earth into a black hole, it would shrink to have a radius of 9 millimeters. Earth’s actual diameter is 12,756 kilometers, which would be times of the diameter of that “Earth” black hole.
2) To make Jupiter into a black hole, it would shrink to have a radius of 280 centimeters. Jupiter’s actual diameter is 139,822 kilometers, which would be times of the diameter of that “Jupiter” black hole.
CorrectIncorrectHint
diameter = 2 x radius
1 kilometers = 1000 meters; 1 meter = 1000 millimeters (= 100 centimeters) -
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Question 12 of 21
12. Question
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A to our Moon or even Mars is possible, while to a black hole is impossible in the next several decades.
CorrectIncorrectHint
A 7 letter word starting with “jo”, meaning: trip, expedition, traveling from one place to another.
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Question 13 of 21
13. Question
Fill in the blank
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The gravitational field of the black hole is so strong that nothing can from it, not even light!
CorrectIncorrectHint
A 6 letter word starting with “es”, meaning: succeed in getting away.
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Question 14 of 21
14. Question
The International Space Station, the most costly single object in the world, cost about _____. This is enough money to buy every American an iPad!
CorrectIncorrectHint
There are about 330 million American people, and an iPad costs about $400.
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Question 15 of 21
15. Question
Fill in the blank
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The International Space Station is the most single object in the world.
CorrectIncorrectHint
A 9 letter word starting with “ex”, meaning: costing a lot of money.
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Question 16 of 21
16. Question
A man-made satellite is a machine that is launched into space and orbits around a body such as Earth in space. Generally, the higher a satellite is, the ______ it moves.
CorrectIncorrectHint
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Question 17 of 21
17. Question
The weather-tracking GOES (Geostationary Operational Environmental Satellite) system orbits Earth once a day at a distance of 22,000 miles above earth and can reach a maximum speed of 7,000 miles per hour. What does “ maximum” mean?
CorrectIncorrectHint
A 7 letter word starting with “ma”, meaning: as great, high, or intense as possible or permitted.
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Question 18 of 21
18. Question
Fill in the blank
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The only way for scientists to detect and study black holes is to observe their effect on nearby matter, because they are .
CorrectIncorrectHint
A word starting with “in”, meaning: unable to be seen.
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Question 19 of 21
19. Question
Which of the following will be absorbed by the black hole when approaching it?
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Question 20 of 21
20. Question
This picture, painted by an artist, is a rapidly spinning supermassive black hole surrounded by an accretion disc. This thin disc of rotating material consists of the leftovers of a Sun-like star which was ripped apart by the tidal forces of the black hole. The black hole is labelled, showing the anatomy of this fascinating object. (Credit: ESO)
The _____ of a black hole is called the Event Horizon.CorrectIncorrect -
Question 21 of 21
21. Question
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Space distances are so vast that scientists usually do not them in miles. They often use the Astronomical Unit (AU), about 150 million kilometres (93 million miles) for space distances.
CorrectIncorrectHint
A 8 letter word starting with “cal”, meaning: determine (the amount or number of something) mathematically.
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