facebook
Leak Proof Bag Science Experiment : Fizzics Education

Welcome!

Have 10% off on us on your first purchase - Use code NOW10

					

Leak Proof Bag

Leak Proof Bag

Follow FizzicsEd 150 Science Experiments:

What you need

  • One Zip Lock bag
  • Water (enough to fill up the Zip Lock bag)
  • Five Sharp pencils

Copyright

Leak proof bag experiment materials - 3 pencils, a cup of water and a zip lock bag
1 A zip lock bag filled with water

Fill the ziplock bag with water and close it.

2 A sharp pencil pushed through a zip lock bag filled with water

Hold up the ziplock bag and poke it with the sharp end of the pencil. Try fast vs. slow… which works better? Push the pencil all the way through the bag!

3 A red and an orange pencil pushed through a zip lock bag filled with water

See how many pencils you can stab into the bag before it starts to leak!

4 A man using a pipette to drop blue coloured water onto a taught strong that is suspended over a tray

Get the Unit of Work on Water Science here!

  • Explore the water cycle
  • Learn about cohesion, adhesion & capillary action
  • From water currents to floatation, join us to explore water science!

Includes cross-curricular teaching ideas, student quizzes, a sample marking rubric, scope & sequences & more

Orange read more button

5 A student watching a purple liquid fizz
6 Teacher showing how to do an experiment outside to a group of kids.

Online courses for teachers & parents

– Help students learn how science really works

Orange read more button

Why does this work?

The bag is made from a flexible plastic polymer!

When you stab the pencils through the bag, the plastic polymer moves apart creating the hole. Once the pencil has moved through the hole, the polymer pushes back up against the pencil to create a temporary seal with friction.

Variables to test

More on variables here

  • Does this make a difference with hot vs. cold water?
  • Try different brands of zip-lock bags.
  • Can you use thin vs. thick pencils?
  • What about other objects like bamboo skewers, sewing needles or tomato stakes?

A man with a glove above a liquid nitrogen vapour cloud

Learn more!

Comments

Leave a Reply

Your email address will not be published. Required fields are marked *

This website uses cookies to improve user experience. By using our website you consent to all cookies in accordance with our Cookie Policy.