We made lovely space pictures last week. We really wanted to make our own rockets. Teacher had some fizzy tablets in school.
She added them to a container that was about one third full of water. The tablets dissolved and made a gas (CO2). This gas then pushed (exploded) the top of the container off. We put the top on again and the rocket exploded again and again and again. 
We wanted our rocket to look a bit more realistic though, so teacher turned the container upside down in a basin. This time the whole container was blown off the lid.
It really looked like a rocket, but was a bit more messy than the other way round. We know that real rockets are fueled with burning gas. Gas is great for making rockets fly!
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