Quiz about Keep Your Eyes on the Star
Quiz about Keep Your Eyes on the Star

Keep Your Eyes on the Star Trivia Quiz


Stars are amazing. They are bright and hot balls of gases which illuminate our whole universe. If you like stars and want to know more, then have fun with this quiz.

A multiple-choice quiz by The_Rubiks. Estimated time: 4 mins.
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Author
The_Rubiks
Time
4 mins
Type
Multiple Choice
Quiz #
397,889
Updated
Dec 03 21
# Qns
10
Difficulty
Average
Avg Score
6 / 10
Plays
213
This quiz has 2 formats: you can play it as a or as shown below.
Scroll down to the bottom for the answer key.
1. Which of these kinds of star has the smallest diameter? Hint

Red giant
Neutron star
Brown dwarf
White dwarf

2. Which star is the brightest star in the constellation Canis Major? Hint

Rigel
Pollux
Vega
Sirius

3. At the beginning of the twenty-first century, our sun was a red giant star.

True
False

4. Proxima Centauri is the closest star to Earth after Sun. But from which hemisphere of Earth one can see this star?

Answer: (North or South or N or S)
5. Which gas is the main constituent of an active star?

Answer: (I am the one)
6. What kind of star is Van Maanen's star? Hint

Main sequence
Blue hypergiant
White dwarf
Red giant

7. Which star is used to set the scale of magnitude? Hint

Rigel
Vega
Sirius
Pollux

8. Which star is also known as Alpha Aurigae? Hint

Pollux
Aldebran
Vega
Capella

9. The probability of our Sun becoming a black hole in the future is very high.

True
False

10. Which of the following types of star has the highest life expectancy? Hint

Red giants
Red dwarfs
Blue supergiants
Red supergiants


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Quiz Answer Key and Fun Facts
1. Which of these kinds of star has the smallest diameter?

Answer: Neutron star

Neutron stars are very small and are highly dense. Their size can range from 10km to 30km in diameter. When a star with a mass of 1.4 solar mass to 3 solar mass explodes during a supernova explosion, the particles of the exploded star merge together, due to gravity, and a neutron star is born. Neutron stars have a very strong magnetic field.
2. Which star is the brightest star in the constellation Canis Major?

Answer: Sirius

Sirius is the brightest star in the constellation Canis Major. It is also the brightest star in the night sky. This star is roughly around 8 light years away from Earth. Sirius is a part of the 'big dog' constellation, so is known as the dog star.
3. At the beginning of the twenty-first century, our sun was a red giant star.

Answer: False

The sun is currently in a phase known as main sequence. This is a phase where a star uses hydrogen as fuel to provide energy and light. After this stage, when hydrogen comes to an end, the outer layer of the star starts to expand and it changes into a red giant.
4. Proxima Centauri is the closest star to Earth after Sun. But from which hemisphere of Earth one can see this star?

Answer: South

Proxima Centauri is the closest star to Earth after Sun. It is about 4.2 light years away from Earth. It is a part of a three star system with Alpha Centauri A and Alpha Centauri B. Proxima Centauri is a part of the constellation Centaurus.
5. Which gas is the main constituent of an active star?

Answer: Hydrogen

An active star constitutes of hydrogen and helium gas, with hydrogen as the major component. A star which is active converts hydrogen into helium for energy. As a star ages, its hydrogen ends and it starts using helium as fuel and converts it into other heavier elements.
6. What kind of star is Van Maanen's star?

Answer: White dwarf

Van Maanen's star was discovered by Adriaan Van Maanen in 1917. This star is about 14.4 light years away from Earth. It has a diameter of about 8400 Km. This is even less than the diameter of the Earth. It is a white dwarf star. White dwarf stars are hot and dense but are not very bright.
7. Which star is used to set the scale of magnitude?

Answer: Vega

Vega is the brightest star in the constellation Lyra. This star is around 25 light years away from Earth. It has a magnitude around 0. The lower the magnitude, brighter the star. So if a star has negative magnitude, then it means it is brighter than the star Vega.
8. Which star is also known as Alpha Aurigae?

Answer: Capella

Capella is the brightest star in the constellation Auriga, so is known as Alpha Aurigae. It is around 42 light years away from Earth. It is the sixth brightest star in the night sky and the third brightest in the northern hemisphere.
9. The probability of our Sun becoming a black hole in the future is very high.

Answer: False

Our sun can never become a black hole in the future as it is too small. It will end its life as a white dwarf. When a star dies, its core survives the supernova explosion, but, due to gravity, it starts to shrink. The more it shrinks, the more dense it becomes. If the mass of the core is more than three solar masses then it will become so dense that its gravity won't allow light to escape from it, becoming a black hole. If stars are not massive, they end their lives as white dwarfs or neutron stars.
10. Which of the following types of star has the highest life expectancy?

Answer: Red dwarfs

The smaller the star, the higher will be its life expectancy. Among all the stars the life expectancy of red dwarfs is highest. Red dwarfs are stable stars and account for two thirds of all stars in our galaxy but they are not bright enough to be seen from Earth.
Source: Author The_Rubiks

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