Yesterday Y7 used their knowledge of pressure
to launch rockets.
First you need to add some water.
This will be the propellant
Different amounts were used each time by some groups
Measured carefully of course
So that it was an accurate investigation
The rocket was attached to a pump
and pumped to increase the pressure inside the bottle
It builds up and up.
The excitement builds
And the rockets fired
pushing the water out backwards
so they shoot forwards (Newton's third law of motion)
"Every action has an equal and opposite reaction"
Lots of groups all working harmoniously
Some groups tried different amounts of water each time
Some tried different angles of the gutter launch system
They all shot across the terrace
and the length od flight was measured
And then written down.
