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Home » Early Years Science » Preschool Science » Spooky Halloween Science Experiments

Spooky Halloween Science Experiments

Modified: May 10, 2023 · Published: Sep 24, 2012 by Emma Vanstone · This post may contain affiliate links · 36 Comments

Today Science Sparks brings you lots of fun and deliciously spooky science experiments. Some of these you might have seen recently, some are from last year, and all are a lot of fun! Do let us know how you get on.

First up is how to make your own fake blood. This would be perfect to use with fancy dress costumes or just for some imaginary fun.

Then our spooky lava lamps. These are super simple to make, you could even add some glitter for a bit of sparkle.

lava lamp made with black food colouring, water and oil

Followed by some creepy density jars. We had so much fun with this one. Can you think of spooky things to float on the different levels?

spooky density jar for Halloween. Layers are treacle, golden syrup, red water and oil

Would you like to scare your friends with some spooky noises? Try an eerie sound device. Again, this is very simple but very effective. Who would you like to scare?

eerie sounds device made with a plastic cup, ribbon and paperclip

We love goo or oobleck here at Science Sparks, and this glow in the dark version is especially spooky!

How about setting up a creepy monster tea party, and learning about baking soda reactions at the same time?

two fizzy potions in a cup for a monster tea party

We even have some great ideas for learning as you carve a pumpkin.

Pumpkin on a scale ready to be weighed and measured

Find out what your spine looks like with as part of a skeleton model.

Finally, how about exploring magnetism with a spooky ghost?

See here for a more recent round-up of even more fun Halloween Science for kids.

What are your favourite Halloween activities?

Last Updated on May 10, 2023 by Emma Vanstone

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Safety Notice

Science Sparks ( Wild Sparks Enterprises Ltd ) are not liable for the actions of activity of any person who uses the information in this resource or in any of the suggested further resources. Science Sparks assume no liability with regard to injuries or damage to property that may occur as a result of using the information and carrying out the practical activities contained in this resource or in any of the suggested further resources.

These activities are designed to be carried out by children working with a parent, guardian or other appropriate adult. The adult involved is fully responsible for ensuring that the activities are carried out safely.

Reader Interactions

Comments

  1. Jayne

    September 24, 2012 at 12:27 pm

    I’m so looking forward to Halloween this year and the experiments look amazing! I can’t wait to try some of them with Sausage.

    Reply
    • ScienceSparks

      October 20, 2012 at 6:56 am

      Let us know how you get on 🙂

      Reply
  2. Pinkoddy

    September 26, 2012 at 8:26 am

    Great experiments as always – thanks for sharing 🙂

    Reply
    • ScienceSparks

      October 20, 2012 at 6:56 am

      Thanks. x

      Reply
  3. JDaniel4's Mom

    September 26, 2012 at 11:34 am

    These all look lie eerie fun!

    Reply
    • ScienceSparks

      October 20, 2012 at 6:57 am

      They are!

      Reply
  4. maggy, red ted art

    September 26, 2012 at 12:17 pm

    Oooh gouhlishly perfect. You are clever!! Love them all!

    Thanks for sharing on Kids Get Crafty!

    Maggy

    Reply
    • ScienceSparks

      October 20, 2012 at 6:58 am

      Thanks Maggy!

      Reply
  5. Liz Burton

    September 26, 2012 at 7:15 pm

    Must try the spooky sounds cup – that sounds great!

    Reply
  6. Alexander Residence

    September 26, 2012 at 7:35 pm

    I love these, I really should visit more often, I know some kids who would love these! It’s great to think of stuff other than craft and food for Halloween!

    Reply
  7. Johnson Babies

    September 26, 2012 at 8:27 pm

    Loving the look of the lava lamps!

    Reply
  8. Debs

    September 26, 2012 at 11:46 pm

    Ooh, I really want to try these.. perhaps in the non-spooky way, but I totally want to do them! lol Thanks for sharing!

    Reply
  9. Alison

    September 27, 2012 at 1:45 pm

    These look fun and I am sure my son will enjoy them 🙂

    Reply
  10. Artchoo!

    September 28, 2012 at 1:33 am

    These are just plain awesome! Great ideas for Halloween- I can’t wait to dig into the fake blood-making. Our house will look like a horror movie set.

    Reply
    • ScienceSparks

      October 03, 2012 at 8:50 am

      So glad you like them x

      Reply
  11. Isil

    September 29, 2012 at 9:37 pm

    Sounds fun!

    Reply
  12. Carrie

    October 05, 2012 at 2:11 am

    What fun experiments!! Thank you for sharing at Sharing Saturday!

    Reply
  13. Trisha @ Inspiration Laboratories

    October 06, 2012 at 2:34 am

    Science is always extra fun around Halloween. Thanks for sharing this awesomeness at the Sunday Showcase! I’ve pinned it to our feature board. 🙂

    Reply
  14. Jill

    October 06, 2012 at 2:42 pm

    These are fab! Will pin these for future reference as my son is a little young still but I’m sure they’ll be really popular for Halloweens to come!

    Reply
    • ScienceSparks

      October 08, 2012 at 7:08 pm

      Awww thanks, so glad you like them. x

      Reply
  15. Ross Mountney

    October 11, 2012 at 2:02 pm

    Such a brilliant site – thanks for sharing your expertise. I’m going to share it round the home school community as I’m sure they’ll find it a valuable resource. BWs

    Reply
    • ScienceSparks

      October 13, 2012 at 9:42 pm

      Thank you.

      Reply
  16. Solar Power

    October 13, 2012 at 5:50 pm

    Yaa this is wonderful science experiment. Thanks for sharing it with us.

    Reply
  17. Mumsmoments

    October 20, 2012 at 7:01 am

    What fab ideas! This is going to keep the kids busy over half term…. Thanks

    Reply
    • ScienceSparks

      October 21, 2012 at 8:44 am

      Glad you like them x

      Reply
  18. Lulastic

    October 26, 2012 at 9:53 am

    THESE ARE SO CLEVER! Can’t wait for Ramona to grow up soe she can appreciate goriness 🙂

    Reply
    • ScienceSparks

      October 26, 2012 at 10:36 am

      Thank you. x

      Reply
  19. Becky

    September 03, 2013 at 3:13 am

    I love these!!! I have 4 kids ages 5-9 who LOVE experiments. Thank you so much for sharing- this is such an awesome web site:).

    Reply
  20. Deceptively Educational

    October 06, 2013 at 8:34 pm

    Thanks for sharing this at the After School Linky! My boys would LOVE these experiments! I’m sharing this on my blog at tomorrow’s link up.

    Reply
  21. Anna@The Measured Mom

    October 07, 2013 at 10:22 am

    Love these fun science ideas! I’m featuring it as part of my Halloween round up today.

    Reply
    • Kim @ The Educators' Spin On It

      October 07, 2013 at 12:48 pm

      Thanks for sharing in the After School Linky Party! You’ve been featured this week in a Roundup of Halloween Activities!

      Reply
  22. Solar

    January 22, 2014 at 2:34 am

    I found a project to my kid for this Halloween.Thanks for sharing.

    Reply
  23. Sura

    August 31, 2017 at 9:33 pm

    Thanks for sharing the project. We can do it for my son. Greetings from : Green Home Solar

    Reply
  24. Paul

    August 31, 2017 at 9:35 pm

    We will try in our house. Thanks.

    Reply
  25. Natasha Thomas

    September 24, 2018 at 7:22 am

    Thanks for sharing this amazing post.

    Reply
  26. Alesia - PrimaryLearning.org

    October 18, 2019 at 8:07 pm

    Such great experiments! Thank you, I’ll share on my facebook page.

    Reply

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