135 Awesome Science Riddles That Even Einstein Would Love [Free Riddle Cards]

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Geek out with these awesome science riddles! See how many you can answer on the first time! So grab your lab coat, fire up your Bunsen burner and test your knowledge with these brain-twisting science riddles.

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Science is one of the coolest things in the world. What better way to explore it with a few laughs and these science riddles. They are sure to tickle your funny bone and test everything you know about science while trying to solve these easy and challenging riddles.

Whether you’re a budding physicist, a curious chemistry enthusiast, or just looking for a good laugh, these riddles have something for everyone. So unleash your inner Einstein and get laughing and learning all at the same time! Grab those safety googles and let’s see who is the science riddle champion!

Love riddles? We do too! Check out these other favorites like our Scary Riddles and our Hard Riddles For Teens.

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Science Riddles

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I’m great at tasting but horrible at smelling. What am I? A tongue
What is the center of gravity? The letter V.
If bananas were to have a chemical formula, what would they be? BaNa2.
What did the scientist say when he found 2 atoms of helium? HeHe.
What number do Nickel and Neon make when they’re combined? NiNe.
I can burn your mouth and sting your eye, but I am consumed every day. What am I? Salt.
You will find me in Mercury, Earth, Mars and Jupiter, but not in Venus or Neptune.What am I? The letter R.
You can’t see me, but I can see you. To be more specific, I see through. What am I? An X-ray.
How did Ben Franklin feel after discovering electricity? Shocked.
What can be measured, but has no length, width, or height? The temperature.
Each of your parents gave you twenty-three threadlike strands that made you who you are today. What are they? Chromosomes.
At night they come without being fetched, and by day they are lost without being stolen. Stars.
I am a unit of chemical elements, but I can never be trusted. What am I? An atom, makes up everything.
I am as hard as a rock, but when you heat me up I melt. What am I? An ice cube.
H, Be, F, S, Mn, Kr, In, Gd, and Tl? What’s the next in the sequence? Fm. These are the chemical elements whose atomic numbers are perfect squares.
What four periodic elements, when combined, makeup something that terrifies criminals? Carbon, Oxygen, Phosphorous & Sulfur (C + O + P + S).
I’m unique in one way but you can find two of me in your daily drink. What am I? Hydrogen.
I am under your face and outside your mind. What am I? Your skull.
I am a black hole’s equivalent of a one-way street. What am I? The event horizon.

What breaks but never falls? Dawn.
What do the numbers 11, 69, and 88 all have in common? They read the same right side up and upside down.
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? A snail.
Lots of people have heard it, but no one has seen it. It will not speak back unless spoken to. What is it? An echo.
What chemical element doesn’t like to follow? Lead.
What do chemists call a benzene ring with iron atoms replacing the carbon atoms? A ferrous wheel.
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? A string.
I am a ball that can be rolled, but never bounced or thrown. What am I? Eyeball.
Kids really love me because I make things float. You can even use me to expand small things. What am I? Helium.
Which weighs more, a ton of concrete or a ton of feathers? They both weigh the same.
I can rush, be still, be hot, be cold, and be hard. I can slip through almost anything. What am I? Water.
What can go up and come down without moving? The temperature.
Shiny like silver, denser than lead, pricier than gold, could stop a bullet, if I wanted to. What am I? Osmium.
What kind of rocks are on the bottom of the Mississippi River? Wet rocks.
What was the first animal to go into space? The cow that jumped over the Moon.
What period of time weighs the least? A light-year.
I am a god, I am a planet, and I can measure the temperature. What am I? Mercury.
Which concept in physics is the loneliest? The singularity.
I am the equivalent of a one-way street in the universe. What am I? A black hole.
What is a priest’s favorite thing about physics? Mass!

I’m essential for healthy bones and teeth, and you can find me in every dairy product. What am I? Calcium.
I am your local weatherperson. I track storms and use weather satellites to provide you with an accurate forecast. What career did I choose? Meteorologist.
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? Brain.
What is the fastest way to determine the gender of a chromosome? Pull down its genes.
What is the stomach’s way of letting you know you’ve neglected it? Grumble.
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? Rhodium.
I’m in your kitchen pantry, waiting for you to wrap me over something. What am I? Aluminum.
You can get me for free, but inside an atom, I add a lot of weight. What am I? Neutron, because it has no charge.
I touch your face. I am in your words. I am the lack of space and beloved by birds. What am I? Air.
What falls but never breaks? Dusk.
What is the moon worth? $1, because it has 4 quarters.
Give it food and it will live; give it water and it will die. What is it? Fire.
How did the astronaut serve dinner in outer space? On flying saucers.
I am a gas that is essential for plants – but I can’t be bought at the gas station. What am I? Carbon dioxide.
What are 10 things that you can always count on? Your fingers.
I am hard as a stone but you can find me on your body. What am I? Teeth.
It is very hard to create me, but I can’t be destroyed – I can only change form. What am I? Energy.
I make up almost ¾ of the universe, but no one knows anything about me. What am I? Dark energy.
Which two elements heal? Helium and Aluminium (He + Al).
What happened when the chemist read the book about helium? He couldn’t put it down.

Which element is derived from a Norse god and a Marvel hero? Thorium.
I am bigger than a daim but worthless. What am I? A nickel.
What element is a girl’s future best friend? Carbon.
I am the least interesting scientist to listen to? Who am I? Niels Bohr.
What are the only two periodic elements to have a liquid state? Bromine and Mercury.
I am a hypothetical tunnel, a short cut if you will, of space-time which connects far away regions. I am a what? Wormhole.
What planet has the shortest year? Mercury, as it is closest to the Sun.
Behind where it hangs it hides. What is it? A Barometer.
I am where radio waves are bounced back to the earth’s surface. Who am I? The Lonosphere.
What can kill with only a thimbles worth; yet is around you at all times? Oxygen.
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 sexual development and promoting bone and muscle growth. What am I? Pituitary gland.
When two light nuclei become one, I liberate quite a bit of nuclear energy? What am I? Nuclear fusion.
What periodic element do pyromaniacs love the most? Arsenic.
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 a perfect idea. What costume did he come up with? Neuron.
I am a rock bigger than Venus but smaller than Uranus. What am I? Earth.
Earth’s climate is an intricate system that involves many different parts. What part of the 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? Ozone layer.
Thirty white horses on a red hill, first they champ, then they stamp, then they stand still. Teeth.
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. It is? Telescope.
I can keep a swimming pool clean, but I can poison you as well. What am I? Chlorine.
Yellow in color, I can be a laboratory risk. You’ll most often find me used in an explosive. What am I? Nitric acid.

I have six eggs I broke two, cooked two, and ate two. How many do I have left? 4
What is the next number in this sequence? 3, 3, 5, 4, 4, 3, 5, 5, 4, 3, 6, _? 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.
I’m an odd number, take away one letter I am even. Which number am I? Seven.
What are the three R’s that keep our planet clean? The three R’s are Reduce, Reuse and Recycle.
I am the hottest body in the solar system, and I keep everyone warm. Who am I? Sun
What is neither water nor land but is always soaking wet? Wetlands.
You can’t see me, I can’t be touched, you can’t feel me – but I cook your lunch. What am I? A microwave particle.
Cesium and iodine love to watch television together. What is their favorite show? CSI. CS is the periodic symbol for Cesium and I is the symbol for Iodine.
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? A fetus.
What kind of animal lives longest in zoos? Turtles.
What did the fox scientist name his laboratory? Den-sity.
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? I am 40 my son is 10.
What goes around and around the wood but never goes into the wood? The bark of a tree.
Occasionally associated with smelly things. What state of matter am I? Gas.
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? Pour in the water, freeze it, then pour in the milk.
I am the one who remains awake when you sleep. But I need to rest when you awake. Who am I? Subconscious mind.
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? Igneous rock.
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? Granite.
Nature is shaped through many natural phenomena. What is the process that causes the breakdown of rocks over time through water and wind? Erosion.
Nature is organized on several different levels. How would scientists classify a group of the same species living in the same area? Population.
All earthquakes are not the same. What scale do we use to measure the size and impact of earthquakes? Seismic scale.

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? Volume.
Number one is hydrogen. Twenty-five is manganese. Sodium is eleven. What list contains all of these? The periodic table.
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? When you mix bleach and ammonia [found in most cleaning products] it creates a deadly gas that can kill.
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? Tsunami.
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? Elephant.
What freezes after it is heated up? A computer.
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? The ball will take infinite bounces before it stops. As per the question, it will keep on bouncing half way up every time it hits the ground. But gravity will play its part at a certain point of time and make it stop.
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? 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.
I’m growing larger with every second that passes, growing faster and faster. However, 80% of me reminds empty. What am I? The Universe.
It’s not air, but it’s everywhere. What am I? Gravity.

Do you have some other favorite science riddles? Be sure to share them in the comments so we can try and solve them!

Printable Science Riddle Cards

Print your science riddles and have fun giggling with the entire family!

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You can Never Have Too Many Riddles! Complete List of Mind-Blowing Riddles!

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Michele Tripple

Michele Tripple is a renowned author and expert in the fields of parenting, relationships, and personal development. With her degree in marriage and family studies, her experience as a Family Life Educator, and over a decade of experience as a professional writer, Michele has authored books that provide practical advice and insights into improving family dynamics and personal growth. Her work is celebrated for its blend of research-driven information and relatable, real-world applications. Michele has been a keynote speaker at conferences and has contributed to numerous publications and media outlets, solidifying her reputation as an authoritative voice in her field and helping families build relationships.