Racing Colours

Thursday, December 18th, 2008
We got tissue paper, cups with a little water in them, and markers. We made spots with the marker fairly near (but not at) the end of the tissue. We put the tissue into a cup with a little water. What happened?
The tissue absorbed the water and pulled the marker dye with it. We could see the colours racing, and we could see what colours are made from other colours. We saw purple (red and blue), green (blue and yellow), orange (yellow and red) and brown (red, yellow and blue).

Colour Wheels

Thursday, December 18th, 2008

Teacher had some Quality Street chocolate wrappers. We could look through the papers and everything seems a lovely colour. When we mixed the colours together we could make new colours.

We discovered that:

red and yellow make orange,

red and blue make purple,

yellow and blue make green and

yellow, blue and red together make brown.

Mrs Newell had some coloured plastic sheets. We stuck these to the windows in different combinations and got the same results.Next we made colour wheels and spun them using toothpicks. Teacher let us spin some with a motor. They spun really well, and made lots of different colours.
We discovered that if you make a wheel with the 7 colours of the rainbow on it, that when it spins you can see a white light. Do you know the colours of the rainbow? We do. They are red, orange, yellow, green, blue, indigo and violet.

Making a Volcano

Tuesday, December 9th, 2008

We put bread soda into a small bottle. (We also added red food colouring for effect, and wash up liquid for bubbles). Nothing happened yet.

Next Markian poured in vinegar and the volcano exploded, sending out bubbly red lava. This is because bread soda and vinegar react together chemically, giving off lots of bubbles (of carbon dioxide). We used the gas made to blow up a balloon. This time we started with vinegar in the bottle and the bread soda in the balloon. When we held the balloon upright, the bread soda in the balloon fell into the vinegar. The gas that was made blew up the balloon.

Fizzy Rockets

Tuesday, December 9th, 2008

We got some fizzy Vitamin C tablets. When they mix with water, they turn fizzy (they react together to give off Carbon Dioxide gas and this gas explodes the lid off the container).We put some water into a container, added a fizzy tablet, put on the lid, counted10,9,8,7,6,5,4,3,2,1 Blast Off.The lid blasted off the container. When we caught the lid and put it back on, the top popped off….again and again. It was so exciting. After a while, no more gas was being made so the lid stopped popping.