Saturday, 28 November 2015

Discovery Week 6 and 7

Week 6 Discovery- Playdough, coloured pikelets
,Rainbow paper, shopping and more! 
Materials You Need:
A bowl filled with water
Clear nail polish
Small pieces of black paper
  • Add 1-2 drops of clear nail polish to the bowl of water. Watch it disperse over the surface of
 the water.
  • Quickly dip the paper into the water. Let it dry on a paper towel.
  • Once it is dry (this only takes a few minutes) tilt the paper in different directions to see the 
rainbow patterns appear. Hold it next to a sunny window for best results.
NOTE: The nail polish will dry quickly on the surface of the water, which will create a film that 
won’t stick to the paper. To do this activity successfully you will need to do it quickly. Be sure to 
dip the paper into the water within 10-15 seconds after you drop the nail polish in. If the nail polish
 does create a dry film on top, simply scoop it off and try again more quickly!

We did this experiment several times with several pieces of paper. It was fascinating to see how each 
piece came out so differently!

How Does Rainbow Paper Work?

When you dip the paper into the water it gets coated with a thin layer of nail polish. Light is reflected by 
the nail polish, creating rainbow patterns. This is basically the same thing that happens when a rainbow
 is naturally formed in the sky.Try to find each of the following colors on your rainbow paper: red. 
orange, yellow, green, blue, indigo, and violet. White light is composed of all of these colors!


Week 7- Discovery- Balloon blowing, 
bottle top art, 
Christmas Clay decorations, 
Knuckle bones, Elastics and more

Blowing Up Balloons With CO2
Chemical reactions make for some great experiments. Make use of the carbon dioxide given off by a 
baking soda and lemon juice reaction by funnelling the gas through a soft drink bottle and in to your 
awaiting balloon!
What you'll need:
  • Balloon
  • About 40 ml of water (a cup is about 250 ml so you don't need much)
  • Soft drink bottle
  • Drinking straw
  • Juice from a lemon
  • 1 teaspoon of baking soda

  1. Before you begin, make sure that you stretch out the balloon to make it as easy as possible to inflate.
  2. Pour the 40 ml of water into the soft drink bottle.
  3. Add the teaspoon of baking soda and stir it around with the straw until it has dissolved.
  4. Pour the lemon juice in and quickly put the stretched balloon over the mouth of the bottle.

What's happening?
If all goes well then your balloon should inflate! Adding the lemon juice to the baking soda creates a 
chemical reaction. The baking soda is a base, while the lemon juice is an acid, when the two combine 
they create carbon dioxide (CO2). The gas rises up and escapes through the soft drink bottle, it doesn't
 however escape the balloon, pushing it outwards and blowing it up. If you don't have any lemons then 
you can substitute the lemon juice for vinegar.




No comments:

Post a Comment