May the Force be With You

Today we learned about forcces.

We discovered that if you drop things they fall at the same speed even if one is heavy and the other is very light.  This is because gravity pulls them to ground at the same speed.

We also discovered that things like feathers take longer to land on the ground becuase they catch some air and that slows them down.

We dropped lots of things to test this theory.  We discovered it is true!  Even when dropped a tiny crayon and a huge, heavy drink bottle they landed at the same time!

We had a competition to see who could make their piece of paper stay in the air for the longest time.  We discovered that the greater the surface area the slower the paper fell.

Have a look at the great clips here.

Dancing Raisins

Today we did a experiment where we made raisins dance!

It was a lot of fun.

We put lemonade in a glass and then added some raisins.
We enjoyed watching the raisins bob up and down in the glass.

We discovered this happened because the carbon dioxide in the drink made bubbles on the raisins.  Then the raisins floated to the top.  When the bubbles popped the raisins sank again.

Making sherbet

We each got a bag and we added
baking soda
citric acid
tartaric acid
raro
icing sugar

We shook our bag to mix the ingredients.

We tasted the citric acid and tartaric acid.

super sour - Briannah
sour - Charlotte
yum, yum, yum., yum, yum - Lily
spicy - Emma
double hot - Bina
stupendously sour- Riley B
super duper lemon luper sour -0 Harper
really, really, really sour - Netahsa
Super sour - Cilliam

When we taste them all together we think
it will fizz on your tongue - Poppy

Bouncy Egg Experiment

Today we started an experiment that will take a whole week to work!

We put one egg in a glass o f water.

We put one egg in a glass of vinegar.

Our Predications

One of the eggs might bounce when you drop it and the other one will only drop and bounce a little bit - Harper

the egg that is in the water will bounce away - Ashley

the vinegar egg will bounce out of the jar - Lily

whne you drop the egg in the vinegar it will bounce but the egg in the water will crash - Tiaan

I think the egg in the vingegar the shell will come off leaving only the inner layer.  THen after afew more days the egg will bounce.  Riley B

    

Silly Putty

Our next experiment is to make silly putty.

We started by putting borax which is a chemical into a cup with some boiling wagter then we mixed it.

In another cup we put some glue, food colouring and cornflour and mixed them together.

Next we are going  pour the borax mix on top of tjhe PVA mix and leave it for 20 seconds.

After 20 seconds we started to mix it very hard and fast.

We will observe what happens.`

W observed that the mix became very thick and hard to mix.
Then we took it out of the cup and played with it.
It feels a bit like playdough but it is made with glue!

it is fun to play with said Harper

The funny thing about silly putty is it looks wet but it feels dry!

We have blue and red hands from the food colouring though!