100+ Funny Science Knock Knock Jokes

If you’re looking to get your kid’s interest in science piqued or want to add a little bit of fun to your next science lesson, look no further than science knock knock jokes!

Kids of all ages love a good knock knock joke, and science-themed knock-knock jokes are a great way to get kids engaged and learning about science in a fun, interactive way. Science knock knock jokes are not only a great way to teach kids about science, but they’re also a fun way to get kids laughing and having a good time.

Whether you’re teaching a lesson about the planets, chemistry, or biology, science knock-knock jokes can help to break up the monotony of a lesson and keep kids engaged. To get you started, here are some of our favorite science knock knock jokes:

Computer Science Knock Knock Jokes

1. Knock, knock.

Who’s there?

LAN.

LAN who?

LAN down the law!

2.  Knock, knock.

Who’s there?

Java.

Java who?

Java good day!

3.  Knock, knock.

Who’s there?

Boo.

Boo who?

Don’t cry, it’s just a syntax error.

4.  Knock, knock.

Who’s there?

Alpaca.

Alpaca who?

Alpaca the keyboard, you type!

5.  Knock, knock.

Who’s there?

Debug.

Debug who?

Debug your brain before you start coding!

6.  Knock, knock.

Who’s there?

Cache.

Cache who?

Catch me if you can!

7.  Knock, knock.

Who’s there?

Algorithms.

Algorithm who?

Algorithm you to finish this joke yourself.

8.  Knock, knock.

Who’s there?

Boolean.

Boolean who?

Boolean logic is the foundation of all computing!

9.  Knock, knock.

Who’s there?

Ctrl+Alt+Del.

Ctrl+Alt+Del who?

I’m sorry, I cannot perform that function without proper authorization.

10.  Knock, knock.

Who’s there?

Ada.

Ada who?

There are a lot of computer languages, but I prefer Python!

11.  Knock, knock.

Who’s there?

HTTP.

HTTP who?

HTTP stands for Hypertext Transfer Protocol, but you probably already knew that.

12.  Knock, knock.

Who’s there?

Algo.

Algo who?

Algorithm me to explain this to you in simpler terms!

13.  Knock, knock.

Who’s there?

Bug.

Bug who?

Bug off, I don’t want any more coding errors!

14.  Knock, knock.

Who’s there?

Wi-Fi.

Wi-Fi who?

Wi-Fi, you always ask me so many questions?

15.  Knock, knock.

Who’s there?

Control freak.

Con…

Okay, now you say, “Control freak who?”

16.  Knock, knock.

Who’s there?

Algorithms.

Algorithms who?

Algorithms are the key to success in computer science!

17.  Knock, knock.

Who’s there?

Debugger.

Debugger who?

Debugger, it looks like you have a bug in your knock-knock program.

18.  Knock knock.

Who’s there?

Floppy.

Floppy who?

Floppy disk is not a thing anymore!

19.  Knock, knock.

Who’s there?

I.P.

I.P. who?

I.P. freely all over the network.

20.  Knock, knock.

Who’s there?

Ctrl Alt Del.

Ctrl Alt Del who?

Your worst nightmare.

21.  Knock, knock.

Who’s there?

Boolean.

Boolean who?

Boolean your way out of this one.

22.  Knock, knock.

Who’s there?

Syntax error.

Syntax error who?

Syntax error, unexpected end of joke.

Computer Science Knock Knock Jokes

Knock Knock Jokes About Science

If you’re looking for a few laughs, science knock knock jokes are the way to go. Whether you’re a scientist or just a fan of science-related humor, these jokes are sure to make you smile.

Here are some of our favorite science knock knock jokes.

23.  Knock, knock.

Who’s there?

Gene.

Gene who?

Gene-ius at work!

24.  Knock, knock.

Who’s there?

Nobel.

Nobel who?

No bell, that’s why I knocked.

25.  Knock, knock.

Who’s there?

Control freak.

Control freak who?

Control freak who studies engineering dynamics.

26.  Knock, knock.

Who’s there?

DNA.

DNA who?

Do not ask me any more questions, I’m just a molecule.

27.  Knock knock.

Who’s there?

Nitrogen.

Nitrogen who?

Nitrogen on the doorbell, it doesn’t work.

28.  Knock knock.

Who’s there?

Oxygen.

Oxygen who?

Oxygen to the doctor, I think I’m sick.

29.  Knock knock.

Who’s there?

Bohr.

Bohr who?

Bohr-ing science jokes are my favorite.

30.  Knock knock.

Who’s there?

Newton.

Newton who?

Newton was the smartest apple that ever lived.

31.  Knock, knock.

Who’s there?

Tank.

 who?

Thank you for asking about the buoyancy of submarines!

32.  Knock, knock.

Who’s there?

Atom.

Atom who?

Atom-arrow I’ll know all the answers to your science questions.

33.  Knock, knock.

Who’s there?

Higgs Boson.

Higgs Boson who?

If you don’t get this joke, it’s because I don’t have enough mass to explain it!

34.  Knock, knock.

Who’s there?

Euclid.

Euclid who?

Euclid would have learned more about geometry if you didn’t interrupt me!

35.  Knock, knock.

Who’s there?

Sherlock.

Sherlock who?

Sherlock Holmes, but you can call me iron. Fe, to be exact.

36.  Knock, knock.

Who’s there?

Hydrogen.

Hydrogen who?

I’m Hydrogen, don’t you recognize me?

37.  Knock, knock.

Who’s there?

Element.

Element who?

Element of surprise, I just discovered a new element!

38.  Knock knock.

Who’s there?

Isabel.

Isabel who?

Is a bell necessary to conduct an experiment?

39.  Knock knock.

Who’s there?

Argon.

Argon who?

Argon is a noble gas, it doesn’t react with just anyone.

40.  Knock, knock.

Who’s there?

Higgs Boson.

Higgs Boson who?

If you don’t know me, you haven’t been paying attention to physics.

41.  Knock, knock.

Who’s there?

Control freak.

Control freak who?

Okay, now you say, “Control freak who?”!

42.  Knock, knock.

Who’s there?

Tesla.

Tesla who?

Nikola Tesla, inventor of the AC motor and wireless communication!

Knock Knock Jokes Science

43.  Knock, knock.

Who’s there?

Beaker.

Beaker who?

Beaker up and pay attention!

44.  Knock, knock.

Who’s there?

Archimedes.

Archimedes who?

Archimedes out of here before I throw you in the tub!

45.  Knock, knock.

Who’s there?

Galileo.

Galileo who?

Galileo, Galileo, Galileo, let me go!

46.  Knock, knock.

Who’s there?

Gene.

Gene who?

Gene-ius, that’s who!

47.  Knock, knock.

Who’s there?

Yttrium.

Yttrium who?

Yttrium the periodic table, do you see any elements that spell out your name?

48.  Knock, knock.

Who’s there?

Cesium.

Cesium who?

Cesium tomorrow, I have too much research to do today.

49.  Knock, knock.

Who’s there?

Watt.

Watt who?

What do you mean, “Watt who?” I’m a unit of power!

50.  Knock, knock.

Who’s there?

Bohr.

Bohr who?

Bohr-ing, I know, but did you know that Niels Bohr was a famous physicist who contributed to the development of atomic theory?

51.  Knock, knock.

Who’s there?

Laser.

Laser who?

Last night, I dreamed of being a photon, traveling at the speed of light.

52.  Knock, knock.

Who’s there?

Helium.

Helium who?

Helium, I’m not telling you any more science jokes. They are all Argon!

53.  Knock, knock.

Who’s there?

Beaker.

Beaker who?

Beaker out the periodic table, because I’ve got my ion you!

54.  Knock, knock.

Who’s there?

Cesium.

Cesium who?

Cesium fireworks are pretty cool, don’t you think?

55.  Knock, knock.

Who’s there?

Einstein.

Einstein who?

Einstein was in a great mood today!

56.  Knock, knock.

Who’s there?

Titanium.

Titanium who?

Titanium not sure if this is a good joke.

57.  Knock, knock.

Who’s there?

Galileo.

Galileo who?

Galileo, Galileo, Galileo, Figaro, Magnifico Oooo!

58.  Knock, knock.

Who’s there?

Euclid.

Euclid who?

Euclid not be further from the truth!

59.  Knock, knock!

Who’s there?

Astronaut.

Astronaut who?

Astronaut you glad you asked!

60.  Knock, knock!

Who’s there?

Genetics.

Genetics who?

Genetics keep getting better and better!

61.  Knock, knock!

Who’s there?

Periodic.

Periodic who?

Periodic-table is something you should learn!

62.  Knock knock!

Who’s there?

Tesla.

Tesla who?

Tesla, my physics teacher, says that gravity exists!

63.  Knock, knock.

Who’s there?

Henrietta.

Henrietta who?

Henrietta Lacks, an amazing woman whose immortal cells have been used for countless medical discoveries.

Science Jokes for Students

64.  How do you make a skeleton laugh?

 Tickling its funny bone.

65.  How do you organize a space party?

You planet.

66.  What’s the difference between a poorly dressed man on a trampoline and a well-dressed man on a trampoline?

 Attire.

67.  Why do programmers prefer dark mode?

 Less watts, more darkness!

68. Why did the tomato turn red?

Because it saw the salad dressing!

69.  What do you call a sleeping bull?

A bulldozer.

70.  What would you do in case your instructor of elements falls ill?

If Helium and Curium aren’t available, just Barium.

71.  Did you know that Oxygen recently went on a date with Potassium?

The encounter was fine, just OK.

72.  What makes chemists excellent problem solvers?

They have access to all the solutions.

73.  What do you call a benzene ring with carbon atoms substituted by iron atoms, according to chemists?

A ferrous wheel.

74.  Why do chemists like nitrates so much?

They’re more affordable than daily rates.

Science Jokes for Students

75.  What’s the name of a joke that revolves around Cobalt, Radon, and Yttrium?

CoRnY.

76.  What does a content and emotional Santa Claus say regarding chemistry?

HOH, HOH, HOH!

77.  How many avocados constitute a bowl of guacamole?

The number of avocados.

78.  How do trees use the internet for surfing?

 They log in!

79.  Why do atoms go to therapy?

 To get their protons sorted out.

80.  Why did the mathematician go to the beach?

 To study trigonometry.

81.  What did the organic chemist say when they found a new compound?

“This is a-mol-ing!”

82.  Why don’t scientists trust atoms?

Because they make up everything.

83.  Why did the plant break up with its partner?

They just weren’t getting enough chlorophyll.

Jokes About Science Students

84.  Why did the computer science student quit his job?

 He didn’t get arrays.

85.  Why did the chemistry student get arrested?

 He was caught selling solutions on the corner.

86.  Why did the math student study insects?

He was trying to find the root of all evil.

87.  Why did the biology student go on a blind date with a geology student?

She heard he was a real rock star.

88.  Why did the physics student refuse to drink water?

He was afraid it would turn into ice in his stomach.

89.  Why did the computer science student cross the road?

To get to the other site.

90.  Why did the biology student wear glasses?

 She wanted to see things on a cellular level.

91.  Why don’t scientists trust atoms?

Because they make up everything.

92.  Why did the chemist go on vacation?

Because he wanted to experience some chemistry.

93.  Why did the computer science student quit his job?

 He didn’t get arrays.

94.  Why did the engineer refuse to solve the equation?

 Because he didn’t want to integrate himself into the problem.

95.  Why did the biologist carry a microscope everywhere?

 In case he wanted to take a closer look at things.

96.  Why did the statistics professor break up with her boyfriend?

 Because he didn’t understand the significance of their relationship.

97.  Why are chemists great at problem-solving?

Because they possess all the solutions.

98.  What did the volcanic mountain express to his gorgeous spouse?

“I lava you.”

99.  What do you call a martial arts skilled pig?

 A porkchop!

100.  When a biologist captures his own image, what is it called?

A cell-fie.

101.  What do you refer to as a butterfly that lands on the butter?

A butterfly!

102.  What is the favorite game of a tornado to play?

Twister.

103.  How does Earth mock the other planets?

 “You guys have no life.”

Funny Science Knock Knock Jokes for Adults

104.Knock, knock.
Who’s there?
Higgs boson.
Higgs boson who?
If I had a nickel for every Higgs boson joke, I’d be rich in mass! (Joke #1)

105.Knock, knock.
Who’s there?
Schrödinger.
Schrödinger who?
Schrödinger’s cat walked into a bar, and didn’t. It’s a purrfect paradox! (Joke #2)

106.Knock, knock.
Who’s there?
Neutron.
Neutron who?
I asked the neutron to go grab a proton, but it was positively charged with laziness! (Joke #3)

107.Knock, knock.
Who’s there?
Entropy.
Entropy who?
Entropy just keeps increasing, and so does the chaos at my house! (Joke #4)

108.Knock, knock.
Who’s there?
Watt.
Watt who?
Watt did the physicist say to the electrician? You’ve got some potential! (Joke #5)

109.Knock, knock.
Who’s there?
Quantum.
Quantum who?
Quantum physics may be strange, but it’s still less confusing than my dating life! (Joke #6)

110.Knock, knock.
Who’s there?
Astronomer.
Astronomer who?
I’m not an astronomer, but your smile lights up my universe! (Joke #7)

Funny Science Knock Knock Jokes for Kids

111.Knock, knock.
Who’s there?
Atch.
Atch who?
Bless you! Did you just catch a cold virus?

112.Knock, knock.
Who’s there?
Alpaca.
Alpaca who?
Alpaca the telescope; let’s stargaze tonight!

113.Knock, knock.
Who’s there?
DNA.
DNA who?
DNA, I thought you were double-helixing me!

Funny Science Knock Knock Jokes for Kids

114.Knock, knock.
Who’s there?
Justin.
Justin who?
Justin the right element to make some fun science experiments!

115.Knock, knock.
Who’s there?
Solar.
Solar who?
Solar great, I can’t resist telling you more jokes about space!

116.Knock, knock.
Who’s there?
Atom.
Atom who?
Atom glad you opened the door! Science is all around us!

117.Knock, knock.
Who’s there?
Pluto.
Pluto who?
Pluto may not be a planet anymore, but you’re still out of this world!

Short Funny Science Jokes

118.Why do chemists like nitrates so much?
Because they’re cheaper than day rates!

119.Parallel lines have so much in common.
It’s a shame they’ll never meet.

120.Did you hear about the mathematician who’s afraid of negative numbers?
He’ll stop at nothing to avoid them.

121.Why did the physics professor break up with the biology professor?
There was no chemistry.

122.I told a chemistry joke, but there was no reaction.

123.I would tell you a chemistry joke, but all the good ones are gone. Argon.

124.What did one ion say to the other?
“I’ve got my ion you.”

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Conclusion

Science Knock Knock jokes are perfect for any occasion! Whether you’re looking to have a good time with friends and family or just looking for a few laughs, these jokes will make everyone crack up. So the next time you’re looking for a few laughs, be sure to give these science knock knock jokes a try!

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