Year 10 Air resistance experiment 2: reproducible

This experiment investigates the same theory as the parachutes experiment. It will have the same independent, dependent and control variables.
Get a sheet of A4 paper - use a page from your book if necessary. Fold it into quarters

 Carefully tear or cut the four quarters.

 Take the first piece, fold it in half longways and draw a line 1 cm up from the open edge.

 Fold the corners down to the line.

 Fold the bottom edge up along the line.

 Repeat on the other side.

 Open it out to make a tiny paper hat.

Here's why I am referring to them as "hats".

 Hold it up as high as you can with the open side downwards to catch the air. Let it fall and time how long it takes to hit the ground. Do this 3 times to get repeat readings for a mean.

 Make another one and slide it into the first one.

 You now have a double "hat". Open it out. It now has twice the weight but the same area for catching the air because one is sat inside the other.

Hold it up as high as you can and do 3 repeat readings. Do the whole experiment with 3 stacked inside each other and then 4. The table is below.

Here is the graph of my results

We had the same independent variable as the parachute experiment, the same dependent variable and the same control variable, even though it was a different experiment. The graph is the same shape showing the same pattern in the results. When a different experiment investigates the same variables but gets the same pattern in the results, we say that the pattern is REPRODUCIBLE. It is extra evidence that the theory about air resistance and terminal velocity is correct.