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So, you’ve just decided to take a break from studying and need something to pass the time. Or maybe you’re waiting for a plane, or you’re stuck at the train station, and you want something to keep your brain occupied for the next hour or so. If you’re up for some challenging brainteasing, science riddles are the perfect combination of fun and education!

Science riddles can take riddling to a new, more intellectual level, with tricky questions that use science to stump you. They are perfect for any occasion where you need a break from your everyday routine and want to spice things up with some science brain teasers. But don’t worry if you don’t know too much about science. Most of these riddles about science are just perfect for keeping everyone entertained, whether they’re an expert in physics or not, since they test your creativity and problem-solving skills rather than your actual knowledge of science.

Here we are with the best science-themed tricky riddles (with answers) that will test your ability to think outside the box!

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#1

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge What is the center of gravity?

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#2

If bananas were to have a chemical formula, what would it be?

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#3

What can eat a lot of iron without getting sick?

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Robert T
Robert T
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2 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

There is a town called Rust in Germany. It's where old cars from the 70's go to die. Rust in peace, man!

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#4

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge What did the scientist say when he found 2 atoms of helium?

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Zero
Zero
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2 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Different version: what element gets funnier the more there are?

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#5

What number do Nickel and Neon make when they’re combined?

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#6

I can burn your mouth and sting your eye, but I am consumed everyday what am I?

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#7

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge What would you call a re-make of the classic film Tron?

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#8

You will find me in Mercury, Earth, Mars and Jupiter, but not in Venus or Neptune. What am I?

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#9

You can’t see me, but I can see you. To be more specific, I see through. What am I?

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#10

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge How did Ben Franklin feel after discovering electricity?

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#11

What can be measured, but has no length, width, or height?

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#12

Each of your parents gave you twenty-three threadlike strands that made you who you are today. What are they?

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Ejaz Mir
Ejaz Mir
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2 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

In fact they transfered me what they got from their parents 😅😅😅

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#13

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge What is black when you get it, red when you use it, and grey when you are finished with it?

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#14

At night they come without being fetched, and by day they are lost without being stolen.

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#15

I am a unit of chemical elements, but I can never be trusted. What am I?

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#16

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge I am as hard as a rock, but when you heat me up I melt. What am I?

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Vic
Vic
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2 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

So do most solids, given the right temperature..

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#17

H, Be, F, S, Mn, Kr, In, Gd, and Tl? What’s the next in the sequence?

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Eligijus Sinkunas
Eligijus Sinkunas
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Verified 1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Answer: Fm. These are the chemical elements whose atomic numbers are perfect squares.

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#18

You are in a room with two metal rods and no other metal. One of them is magnetized and the other is not. How can you determine which one is magnetized and which is not?

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#19

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge What four periodic elements, when combined, make up something that terrifies criminals?

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Eligijus Sinkunas
Eligijus Sinkunas
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Verified 1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Answer: Carbon, Oxygen, Phosphorous & Sulfur (C + O + P + S).

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#20

I'm unique in one way but you can find two of me in your daily drink. What am I?

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#21

I am under your face and outside your mind. What am I?

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#22

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge I am a black hole’s equivalent of a one-way street. What am I?

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Eat Dirt Crow
Eat Dirt Crow
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2 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Not a perfect analogy. You can still, technically, go the wrong way down a one way street. Once you pass the event horizon, however, there's no going back.

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#23

I have been around for millions of years but am only a month old. What am I?

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#24

What breaks but never falls?

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#25

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge What do the numbers 11, 69, and 88 all have in common?

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Eligijus Sinkunas
Eligijus Sinkunas
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Verified 1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Answer: They read the same right side up and upside down.

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#26

I love to roam, but I always stay home. If you carried what I carried, you’d end up breaking your back! What am I?

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#27

Lots of people have heard it, but no one has seen it. It will not speak back unless spoken to. What is it?

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#28

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge I come as a gas, and I’m in line with Neon. I’m also the home of a very Super man. What am I?

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#29

What chemical element doesn’t like to follow?

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#30

What do chemists call a benzene ring with iron atoms replacing the carbon atoms?

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#31

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge I am said to be only one dimension, and as small as can be, some say I am the foundation of all that you see. What am I?

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#32

I am a ball that can be rolled, but never bounced or thrown. What am I?

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#33

I'm sometimes full, but I never overflow. What Am I?

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#34

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge Kids really love me because I make things float. You can even use me to expand small things. What am I?

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#35

Which weighs more, a ton of concrete or a ton of feathers?

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#36

I can rush, be still, be hot, be cold, and be hard. I can slip through almost anything. What am I?

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#37

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge What can go up and come down without moving?

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#38

How do we know that Saturn was married more than once?

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#39

Shiny like a silver, denser than lead, pricier than gold, could stop a bullet, if I wanted to. What am I?

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#40

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge What kind of rocks are on the bottom of the Mississippi River?

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#41

What was the first animal to go into space?

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#42

What period of time weighs the least?

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#43

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge I am needed for flight but cannot fly on my own. What am I?

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Gaming Elementalist
Gaming Elementalist
Community Member
2 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Planes fly without feathers, but need wings. Hot air balloons fly without either, but need air. They all need air, but air flies on its own. In short, this is stupid.

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#44

I am a god, I am a planet, and I can measure the temperature. What am I?

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#45

Which concept in physics is the loneliest?

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#46

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge I am the equivalent of a one-way street in the universe. What am I?

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#47

What is a priest’s favorite thing about physics?

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#48

I’m an individual on my own - but you can find two of me in your daily drink. What am I?

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#49

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge I’m essential for healthy bones and teeth, and you can find me in every dairy product. What am I?

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#50

I am your local weatherperson. I track storms and use weather satellites to provide you with an accurate forecast. What career did I choose?

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#51

I am the part of your body that controls all your decisions. I need to be nurtured and stimulated, but I will help you learn. What am I?

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#52

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge What is the fastest way to determine the gender of a chromosome?

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#53

Born in the ocean and white as snow. When I fall back to water I disappear without a trace. What am I?

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#54

What is stomach's way of letting you know you've neglected it?

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#55

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge I may not be gold but I make gold look more beautiful. I help you fly and even though I'm not popular, my prices run high. What am I?

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#56

I'm in your kitchen pantry, waiting for you to wrap me over something. What am I?

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#57

You can get me for free, but inside an atom, I add a lot of weight. What am I?

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#58

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge I cannot live, but I make life possible. When I sit with others, I prefer the upper left of the table. I am light and can combine with others of my kind to be bright. I only own one thing, no one knows exactly where it is. I am one to share, but not with those that are the heaviest. What am I?

ImRedditingOnMyPhonr Report

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#59

I touch your face. I am in your words. I am a lack of space and beloved by birds. What am I?

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#60

What falls but never breaks?

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#61

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge What is the moon worth?

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#62

Give it food and it will live; give it water and it will die. What is it?

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#63

When the son of the water returns to the parent, it dies. What is it?

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#64

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge How did the astronaut serve dinner in outer space?

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#65

I am a gas that is essential for plants - but I can’t be bought at the gas station. What am I?

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#66

What are 10 things that you can always count on?

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#67

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge I am hard as a stone but you can find me on your body. What am I?

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#68

I can be good for you, but I can also be bad for you, and you will find me wherever you go. What am I?

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#69

It is very hard to create me, but I can’t be destroyed - I can only change form. What am I?

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#70

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge I make up almost ¾ of the universe, but no one knows anything about me. What am I?

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#71

Which two elements heal?

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#72

What happened when the chemist read the book about helium?

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#73

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge Which element is the most boring one?

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#74

Which element is derived from a Norse god and a Marvel hero?

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#75

I am bigger than a daim but worthless. What am I?

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#76

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge What element is a girl’s future best friend?

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#77

I am the least interesting scientist to listen to? Who am I?

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#78

Without me as a part of your brain, you would lose your posture and balance, and be unable to coordinate muscle movements. I always hang out near my good friend the brainstem. What am I?

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#79

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge What are the only two periodic elements to have a liquid state?

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#80

I am a hypothetical tunnel, a short cut if you will, of space-time which connects far away regions. I am a what?

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#81

What planet has the shortest year?

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#82

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge Behind where it hangs it hides. What is it?

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#83

Electrically charged particles called ions are found here. Who am I?

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#84

I am where radio waves are bounced back to the earth's surface. Who am I?

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#85

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge What can kill with only a thimbles worth; yet is around you at all times?

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Brian Upsher
Brian Upsher
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2 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

With more than a thimble your survival is doubted, yet always surrounded and you'll die without it. What is it? Oxygen

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#86

Of all the glands, I am known as the master because I boss around the other endocrine glands and tell them what to do. But even though I am a bit bossy, you need me for many things, such as secreting hormones required for s**ual development and promoting bone and muscle growth.

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#87

When two light nuclei become one, I liberate quite a bit of nuclear energy? What am I?

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#88

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge I was once an old massive star and soon I will be a brightly colored gas cloud, but for now I am a massive explosion. What am I called?

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#89

What periodic element do pyromaniacs love the most?

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#90

Ronnie’s teacher told him that he and his classmates all had to dress up as a part of the body for the school’s Halloween party. The teacher also said it couldn’t be the same old thing, it had to be something new. Ronnie had the perfect idea. What costume did he come up with?

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#91

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge I am a rock bigger than Venus but smaller than Uranus. What am I?

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#92

Earth’s climate is an intricate system that involves many different parts. What part of earth’s system helps prevent the harmful UV rays of the sun from raising the temperature of the earth’s surface or from damaging our skin?

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#93

I give you a group of three. One is sitting down, and will never get up. The second eats as much as is given to him, yet is always hungry. The third goes away and never returns.

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#94

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge Thirty white horses on a red hill, first they champ, then they stamp, then they stand still.

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#95

If you put your eye to this, it can help you to see far, It helps you to see planets, The moon or even a star.

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#96

I can keep a swimming pool clean, but I can poison you as well. What am I?

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#97

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge Yellow in color, I can be a laboratory risk. You’ll most often find me used in an explosive. What am I?

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#98

I can protect you from the sun’s strong rays. You can apply me on your skin to prevent sunburn. What am I?

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#99

I have six eggs I broke two, cooked two, and ate two. How many do I have left?

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#100

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge What is the next number in this sequence?

3, 3, 5, 4, 4, 3, 5, 5, 4, 3, 6. 6.

Mx_Toniy_4869 Report

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Eligijus Sinkunas
Eligijus Sinkunas
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Verified 1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Answer: 6. It's the number of letters in the corresponding 'n' number for example one has 3 two has 3 etc. and 12 has 6 letters.

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#101

I'm a odd number, take away one letter I am even, which number am I?

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#102

What are the three R’s that keep our planet clean?

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Eligijus Sinkunas
Eligijus Sinkunas
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Verified 1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Answer: The three R’s are Reduce, Reuse and Recycle.

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#103

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge What grows only upwards and can never come down?

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#104

I am the hottest body in the solar system, and I keep everyone warm. Who am I?

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#105

What is neither water nor land but is always soaking wet?

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#106

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge You can’t see me, I can’t be touched, you can’t feel me - but I cook your lunch. What am I?

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#107

Cesium and iodine love to watch television together. What is their favorite show?

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#108

I know you may like to eat sugar, but when you eat too much of it and your blood-sugar levels rise, then my good friend Pancreas releases me into the bloodstream to restore blood sugar levels to their norm. What am I?

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#109

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge I was once called an embryo, but I have now gone through more than eight weeks of development, so my name is now changed to what?

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#110

What kind of animal lives longest in zoos?

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#111

What did the fox scientist name his laboratory?

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#112

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge I am four times as old as my son. In 20 years time I shall be twice as old as him. How old are we now?

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#113

When Henry was six years old, he hammered a nail into his favorite tree to mark his height. Five years later at age eleven, Henry returned to see how much higher the nail was. If the tree grew by ten inches each year, how much higher would the nail be?

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Eligijus Sinkunas
Eligijus Sinkunas
BoredPanda Staff
Verified 1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Answer: The nail would be at the same height since trees grow at their tops.

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#114

What goes around and around the wood but never goes into the wood?

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#115

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge Occasionally associated with smelly things, what state of matter am I?

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#116

You have a glass of milk and a glass of water. You need to pour them into the same container such that the two liquids are differentiated and can be separated. How do you do it?

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Eligijus Sinkunas
Eligijus Sinkunas
BoredPanda Staff
Verified 1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Answer: Pour in the water, freeze it, then pour in the milk.

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#117

I am the one who remains awake when you sleep. But I need to rest when you awake. Who am I?

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#118

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge When a volcano erupts, it holds the potential to spew magma over the surrounding area. What type of rock is formed as the magma cools and solidifies?

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#119

I am the oldest form of igneous rock. I make up the majority of the earth’s crust. And I am one of the hardest materials in the world. What type of rock am I?

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#120

Nature is shaped through many natural phenomena. What is the process that causes the breakdown of rocks over time through water and wind?

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#121

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge Nature is organized on several different levels. How would scientists classify a group of the same species living in the same area?

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#122

All earthquakes are not the same. What scale do we use to measure the size and impact of earthquakes?

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jadin avatar
Jadin Hanson
Jadin Hanson
Community Member
2 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

What scale do we use to measure the amount of drinking I need to do to finish these? Delirium tremors.

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#123

Everything takes up space in the world. Without space, there would be no place for anything, and that would be no fun! What unit do scientists use to measure how much space an object takes up?

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Jadin Hanson
Jadin Hanson
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2 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Umm I don't think volume is a unit. A liter is a unit of volume. But volume is a measurement, not a unit. I think.

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#124

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge Number one is hydrogen. Twenty-five is manganese. Sodium is eleven. What list contains all of these?

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#125

Andrew was going to bleach his socks because they had gotten muddy the day before. As he was pouring the bleach into the washing machine, he spilled some on the floor. He got some cleaning fluid and mopped it up with a rag. Minutes later Andrew was dead. Why?

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jadin avatar
Jadin Hanson
Jadin Hanson
Community Member
2 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Hahaha. Great one! What s gas. You're killing me. Seriously please finish the job.

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#126

Earthquakes can be disastrous if the world is unprepared. Not only are some strong enough to shake the earth and bring down buildings, but they can also cause other natural disasters. What natural disaster commonly follows a large earthquake?

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#127

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge I am the largest land animal on the earth. I usually live to be 70 years old and drink water through my natural straw. What am I?

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#128

What freezes after it is heated up?

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#129

Martha throws a ball from a 90-foot building. The ball is quite bouncy and when it hits the ground, it bounces back half way up. It keeps bouncing back to half way up. How many bounces will the ball take before it comes to a permanent halt?

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Ashi Mari
Ashi Mari
Community Member
2 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

"how many bounces it will take?" Answer: infinite but then it will stop ???

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#130

There are two rooms connected by a door, once you go through the door from room 1 to room 2, you can't go back. You can't see in-between room 1 and room 2. In room 1 there are three light switches labeled A, B and C connected to lightbulbs A, B, and C in room 2. You don't know what order the lightbulbs are in. How do you find out which switch is connected to which lightbulb?

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Eligijus Sinkunas
Eligijus Sinkunas
BoredPanda Staff
Verified 1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Answer: Turn on A and wait a few minutes. Then turn on B and go into the second room. A is on and hot. B is on and not hot. C is off.

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#131

132 Fun Science Riddles If You’re Up For A Brainteasing Challenge I'm growing larger with every second that passes, growing faster and faster. However, 80% of me reminds empty. What am I?

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#132

It's not air, but it's everywhere, what am I?

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