I'm so hungry! I haven't had anything to eat since I put myself
back together again.
...just a quick snack...class 4/5 will not be back for ages...
...mmnn...a really juicy , rusty tractor...
Friday 21 January 2011
Wednesday 19 January 2011
The Return of the Iron Man...
Which materials did we use to make our model?
...coming soon to a class near you...
...coming soon to a class near you...'The wind sang through his iron fingers. His great iron head, shaped like a dustbin, slowly turned, this way that way. He was hearing the sea. His eyes, like headlamps,glowed white, then red,then infrared,searching the sea.
Never before had the iron man seen the sea...
I am sure I am still missing something?
Friday 14 January 2011
Make Cornflour Slimeballs!
Some substances can't make up their mind if they are a liquid or a solid.
See what we mean when you try out this very messy experiment!
What you need
packet of cornflour, water, a wooden spoon, a bowl
What you do
step 1
Pour half the packet of cornflour into a bowl. Then gradually pour water over and
mix until it looks and feels like custard.
step 2
Run your fingers through the liquid.
step 3
Now try and punch the mixture with your fist.
What happens
When you run it through your fingers it acts like a liquid.When you
punch it, it becomes hard and behaves like a solid. (If it doesn't add more cornflour)
How and Why
The cornflour particles are suspended in the water, so it flows like a liquid.
When you apply force to it , the particles lock together, acting like a solid.
As soon as the force stops the slime goes back to being runny.
Now try to quickly make and throw a slimeball for a friend to catch
before it it turns runny! Have fun! Let us know how you get on!
See what we mean when you try out this very messy experiment!
What you need
packet of cornflour, water, a wooden spoon, a bowl
What you do
step 1
Pour half the packet of cornflour into a bowl. Then gradually pour water over and
mix until it looks and feels like custard.
step 2
Run your fingers through the liquid.
step 3
Now try and punch the mixture with your fist.
What happens
When you run it through your fingers it acts like a liquid.When you
punch it, it becomes hard and behaves like a solid. (If it doesn't add more cornflour)
How and Why
The cornflour particles are suspended in the water, so it flows like a liquid.
When you apply force to it , the particles lock together, acting like a solid.
As soon as the force stops the slime goes back to being runny.
Now try to quickly make and throw a slimeball for a friend to catch
before it it turns runny! Have fun! Let us know how you get on!
Check out this link.
Wednesday 12 January 2011
Check out the behaviour of particles!
To help us understand particles,
we acted out the different behaviour of
solid particles, liquid particles
and gas particles.
All three behave quite differently.
Can you work out which picture
demonstrates each of the 3
states of matter?
If you are not sure ask a class 4/5
pupil who will explain or demonstrate
the behaviour of each particle type
to you.
Science in the Snow...
Our science investigation in term 3 is Materials.We put the freezing temperatures and ice outside to good use
as we explored the 3 states of matter , solid, liquid and gas.
By experimenting with ice collected in the playground
we found out that materials can change state
when heated or cooled.
We also noted that the changed state can
sometimes be reversed.
When a liquid is heated it evaporates
and forms gas e.g. steam from our boiling kettle.
When gas is cooled it condenses to form a liquid.
e.g our boiling kettle experiment repeated next to the cold
classroom window.
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