Gross Science Experiments

Everyone loves an icky, sticky experiment, so I’ve pulled together my favourite gross science experiments. I also have some exciting news at the bottom of the post about my new book, Gross Science Experiments.

Make fake blood, pretend scabs, model the digestive system and more science to make you say “YUCK”!

Gross Science Experiments for Kids

Pretend Blood Recipe

This fake blood recipe is great for a spooky Halloween activity and a fun way to learn about how and why blood clots.

Image of a syringe filled with food colouring and water
Fake Blood

Edible Scabs

Staying with the blood theme, I have a great recipe for making jelly scabs! These look great and taste fantastic, too!

jelly scabs
Jelly Scabs

Digestive System Model

This gross demonstration of the digestive system is great fun and deliciously disgusting. You can model the journey of food from the mouth all the way through the body!

Child holding a bag of mashed banana, orange juice and weetabix

Make a Snot Trap

Learn about the clever properties of snot and how it filters bacteria and other particles with this snot coloured oobleck!

Snot trap - from Gross Science

Dinosaur Poo

Find out what dinosaurs ate by making dinosaur poo! We made our ‘poo’ from play dough and added salt dough bones.

Two Schleich dinosaurs with play dough poo behind them
Dinosaur Poo

Mouldy Food

Find out why food rots and how you can slow the process down. This is a great way to learn about setting up an experiment as a fair test.

mouldy tomatoes
Mouldy tomatoes

Earwax Snacks

Kids Activities Blog tried making my ear wax snacks from Gross Science, and they came out great!

Ear Wax science activity for kids - fun science activity for learning about ear wax!

Gross Science Experiments – THE BOOK

For even more Gross Science ideas, check out my hilariously disgusting book with SIXTY icky, smelly, scary and downright silly gross science experiments!

Gross Science book for kids
Gross Science Experiments Book

Whether you want to discover the funny things a body does or the ghastly creatures around you, there’s always something new to learn. Travel back in time to find out how people tried to mask the awful smells of the time, how the Romans wiped their bottoms and even how a famous person’s body exploded! Discover what makes your breath so smelly, why stinky foods taste better when you hold your breath and make your own edible ( but very realistic looking ) poo.

Try an easy, exciting dissection with a homemade model of a brain or heart. Make decorations from milk or take a terrifying bath with the Bug Bath Bomb. This collection of fun yet revolting activities is perfect for learning about the world in a hands-on, sometimes delicious, and sometimes disgusting way.

Girl pulling an ick face holding a drink of water and pomegranete seeds made to look like a cocktail.
Blood cocktail

What’s in the book?

Gross Science Experiments is separated into nine chapters.

1. Blood and Brains

Make a jelly scab, fake blood, a blood bath, red blood cell cupcakes, and dissect a brain in this chapter.

Blood and Brains Chapter in #GrossScience
Gross Science Experiments – THE Book!

2. Baffling Bodies

Make a jelly skin model, apple juice urine to test, earwax snacks and more disgusting body science in this chapter.

Image of jello used to make a model of the layers of skin
edible skin layer model

3. Stinky Smells

Find out how to tell if you’ve got smelly breath, what happens when a cow burps and lots more stinky experiments.

4. Joking Around

This chapter includes pretend vomit, edible pimples to pop, fake poo and baths full of bugs along with other ideas to gross out your friends.

Fake vomit, made from crushed vegetables and gelatain for a gross science activity.
Edible vomit

5. Disgusting Diseases

Find out how germs spread, why snot is green, make disgusting marshmallow teeth and more disease themed investigations!

Snot trap - from Gross Science
Snot Oobleck

6. Gross Foods

Watch a pumpkin rot, find out how stomach acid works, make pickled apple skulls and lots more.

7. All About the Poo

Make edible poo, find out how big a sloth poo is, track sweetcorn in your own poo and lots more poo science experiments.

chocolate tiffin poo!
Edible Poo!

8. Bugs and Grubs

Serve up food in your very own bug restaurant, make bug slime, make a worm hotel and other bug and grub themed investigations.

Bug Oobleck

9. Gross History

I think this is my favourite chapter. Take a trip back in time to learn about some of the stinkiest periods of human history!

Mummify a Vegetable Experiment
Gross Science Experiments - deliciously disgusting science book for kids #scienceforkids #grossscience #sciencebooks #kidssciencebooks
Gross Science Experiments

Order Gross Science today from the following retailers!

Amazon

Amazon UK

Barnes & Noble

IndieBound

Books-a-Million

More science books for kids

Gross Science is my third children’s science book. This IS Rocket Science and Snackable Science Experiments are also available to order from bookstores in the US, Amazon, and other online retailers.

Last Updated on October 22, 2024 by Emma Vanstone

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One Comment

  1. These are some really fun and exciting science experiments for kids. It would help them to develop an interest towards STEM fields. Thanks for sharing these activities. It would help many to have fun with science.

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