On Thursday in science class we did an experiment to investigate materials. We made lava lamps. We needed a 500ml bottle, vegetable oil, food colouring, water,a measuring jug and alka seltzer. There were seven groups of three so everyone got a chance to help make the lava lamp. We put some water in the bottle and added vegetable oil. The oil floated on the top. Next we added some food colouring which dissolved in the water. We finally added an alka seltser tablet. This tablet created carbon dioxide which formed bubbles. These bubbles then rose from the bottom to the top. We really think that you should try this at home as it does not take too long to make and all eqiupment is easy to buy.
Eva, Alanah and Marcas
Eva, Alanah and Marcas