Submarine Activity for Kids
Explore technology while practicing fine motor skills with this Submarine Activity for Kids. This quick and easy STEAM idea is perfect for your next ocean preschool theme!
Technically, this activity is from the last week of our month-long ocean thematic study, but not surprisingly the little guy was all about it and begged to do this Submarine Activity for Kids as soon as we opened the box!
Side note: If you’ve been around for a while, then you already know there really wasn’t any begging necessary because this homeschool mama is always up for engaging and hands-on educational activities!
This submarine STEAM definitely packs a lot of punch! You can use this quick and easy under the sea activity to teach your preschoolers and kindergartners about technology, experiment with how submarines work, and even learn about simple physics concepts.
Your kiddos can learn all of that and more with just a few clear bottles, a large bin, and of course some water.
Food coloring is optional, but lots of fun! You know, because who doesn’t love a beautiful blue ocean?
This post may contain affiliate links which means I may receive a small commission at no additional cost to you if an item is purchased through one of these links. For more information, see my disclosures here.
A huge thanks to Experience Early Learning (formerly Mother Goose Time) for providing us with their Experience Preschool curriculum for free in exchange for sharing our honest and authentic stories resulting from our personal experiences. It’s been such a huge blessing to us! As always, my opinions on awesome stuff for little kids are 100% my own.
How do you explain a submarine to a child? STEAM activities for kids make explaining how things work easy. After all, little kids learn best through play, and this submarine bottles investigation station is no exception.
Submarines are large vessels that move underwater. The windows of submarines, called portholes, are usually round. Submarines have a tool called a periscope that sticks out above the water.
When a submarine dives, its ballast tanks are filled with water, which makes the submarine heavier. When it’s time to resurface, the water is replaced with air, which makes it lighter and the submarine rises.

Submarine Activity STEAM for Kids
What you’ll need
- Old Water Bottles
- Sand or Rocks
- Bin of Water
Big Question
- How do submarines work?
Teacher Tips
-
Experiment with putting an uncapped bottle in the water. What happens when it fills with water?
-
What happens when a capped bottle is placed in water?
-
What happens if a capped bottle has sand, rocks, or water inside?
Today’s submarine STEAM activity is a wonderful simulation of how submarines work. When we initially put the empty bottles into the water, they both floated on the surface, but as they filled them with water, they sank to the bottom of the bin.
This submarine activity for kids is also a great way to cool off on a hot day! Both the little guy and baby girl had a blast splashing around in the “ocean water” while learning about submarines.
Don’t forget to check back if you’re interested in seeing what we’re up to next week with our ocean theme from Experience Early Learning (formerly Mother Goose Time).
Looking for more insight & inspiration? Here are the top 10 most popular posts from The Keeper of the Memories. You’re definitely not going to want to miss these!