Design further experiments

Now design your own experiments, don’t forget to only have one condition or variable that you are changing, keep all other variable the same, use repeat trials and average your results. Here are some suggestions.

  • Record the time it takes for the beads to change colour in the sun and then in the shade.

  • Cover the beads up and time how long it takes to return to normal colour.

  • Take the UV beads outside on a cloudy day and observe if UV gets through clouds.

plastic bag with coloured beads

Design some more experiments using the UV beads