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A ten-question quiz regarding the Universe and life. Quiz number 5.

Ask your family or friends these questions and test their knowledge, you can give detailed answers that might surprise them.

By A B ForbesPublished 2 months ago 3 min read
Photo by Mimi Thian on Unsplash

British spelling.

Question 1

Sound can travel through air, liquids, and solids.

At sea level how fast do sound waves travel through the air?

( 825 / 1,225 or 1,625 kilometres per hour )


Question 2

We give it little thought but our galaxy the Milky Way with us onboard is moving through space at a very high speed.

How fast is the Milky Way galaxy moving through space?

( 1.1 / 1.6 or 2.1 million kilometres per hour )


Question 3

The electromagnetic spectrum has different wavelengths.

What has the longest wavelength?

( Radio waves / gamma-rays or microwaves )


Question 4

What was the wingspan of Quetzalcoatlus the now-extinct largest animal that ever took to the skies?

( 7 / 11 or 15 meters )


Question 5

Sagittarius A* is the name of the black hole at the centre of our galaxy the Milky Way.

It has a mass of how many times that of the Sun?

( 2.3 / 3.3 or 4.3 million )


Question 6

Six of the eight planets in the solar system have moons.

How many moons in total are orbiting the six planets?

( 205 / 235 or 265 )


Question 7

The Russian cosmonaut Yuri Gagarin was the first human to travel into space.

When did Yuri Gagarin make that historic flight?

( April 1959 / 1961 or 1963 )


Question 8

An adult mayfly has the shortest lifespan of any known animal.

How long does a mayfly live?

( 1 / 3 or 5 days )


Question 9

Pluto was once classed as a planet but lost its title in August 2006.

How many moons are in orbit around Pluto?

( 2 / 5 or 8 moons )


Question 10

There is an estimate as to how many humans have ever lived.

How many humans have ever lived on Earth?

( 57 / 87 or 117 billion )

Photo by Marina Vitale on Unsplash

Answer to question 1 / 1,225 kilometres per hour.

Under certain conditions, wind speeds on Earth can be very high but they would never reach the speed of sound. Planet Neptune is different, at high altitudes the wind speed can be 1.5 times faster than the speed of sound.


Answer to question 2 / 2.1 million kilometres per hour.

Yes, everything in the Universe is in motion.


Answer to question 3 / Radio waves.

Visible light waves are the only part of the electromagnetic spectrum that human eyes can see. Other animals might see more or less of the spectrum than what we can see.


Answer to question 4 / 11 meters.

Quetzalcoatlus was a pterosaur, a type of flying reptile. It lived roughly 67 million years ago during the late Cretaceous period.


Answer to question 5 / 4.3 million.

The diameter of Sagittarius A* the Milky Way’s supermassive black hole has been estimated at 23.5 million kilometres.


Answer to question 6 / 205 moons.

Earth has 1 moon. Mars 2. Jupiter 79. Saturn 82. Uranus has 27 and Neptune has 14.


Answer to question 7 / April 12th, 1961.

Not long after Yuri Gagarin, Astronaut Alan Shepherd became the first American to enter space, that was on May 5th, 1961.


Answer to question 8 / 1 day.

Yes, some animal lives are very short and some are long.


Answer to question 9 / 5 moons.

The five moons of the dwarf planet Pluto are Charon, Nix, Styx, Kerberos, and Hydra.


Answer to question 10 / An estimated 117 billion.

There are roughly 8 billion people alive at this time. Will there come a time when there is far too much of us, or has that time come?


You may enjoy reading some of my easy-to-understand articles regarding the Universe and Life.

Free reads. Enjoy.


About the Creator

A B Forbes

I hope you find some of my articles interesting.

Our highly developed brain has given us intelligence and curiosity, now with the help of sophisticated scientific instruments, we can try and make sense of the Universe and our existence.

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Comments (1)

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  • A B Forbes (Author)2 months ago

    Author. My articles are written for people with an average understanding of the universe and life. We are not all experts. I hope you gain some knowledge if you decide to read them. Regards.

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