Friday, 10 August 2018

home made water bomb

Name of experiment:  home made water bomb                                                                 

Group names:  Zeke,Justice,Wharengaro ,Jordan,Traezarn.

Change question: How is the bomb going to blow up?

Prediction:The paper will get soggy and break.

We saw…. The water splatter everywhere on the ground when we threw it at the ground. It had water inside and when it hit the ground, it unfolded and the water escaped. It blew up by force and it collapsed. It did not get soggy and break.  We tried different ways.
Video/ Photo link:

Conclusion/ Answer to your question                                                                                            : we were not right in our prediction. The paper did not have time to get soggy. It was the force that made the water escape.                                   

Extending the learning

I wonder questions (Trying new things):I wonder what would happen if I folded it inwards.

Comparing Original (Experiment with trying my new ideas):

We tried folding it in and it  didn’t work because it stayed in one piece when it hit the ground.

Research on topic: (Links) More information on how this works  

How to make a paper water bomb - Fun origami! -  YouTube                                                                                            


What is happening inside the water bomb to make it collapse? Justice thinks it is pressure.

Link to research on pressure.

What would cause more pressure so a big

Jordan wonders…. Would the explosion be bigger if we use vinegar and baking soda and some sellotape to block the hole and shake it?

Friday, 3 August 2018

Walt: use our learning process in science experiments about change

we learnt to make a car  with a balloon and paper cups  straws and fizzy bottle top lid first we cut the cup in half  then made two holes in each side for the straws then we put the straws in and put the lids as the tiers then we made a hole in the back for the balloon then we raced the cars on the table and Justice won the race so we had  to give  one point.