Drag the tiles to the correct boxes to complete the pairs. Your teacher asks you to design an experiment that shows how plants respond to changes in their environment. You have two identical sprouted seeds to do your experiment, and you may add any other equipment of your choosing. Using the scientific method, design an experiment that meets your teacher’s criteria. Match each step of the scientific method with a step of the experiment.

Tiles:

Make observations.

Ask a question.

Test the hypothesis.

Analyze the results, and make a conclusion.

Test or modify.

Boxes:

Plant one sprouted seed with its stem
pointing up. Plant the other sprouted
seed so its stem points down, in the
direction that roots grow. Observe
the direction of growth of the stems.

If you observe no change, repeat the
experiment. If there is a change, repeat
the experiment for one or two more trials
to ensure that the stem always grows up,
against the direction of gravity.

Do the stems of plants always grow up
even when the seed is turned so the
stem points down?

Determine whether the direction that a stem
points affects the direction in which the stem
grows.

The stems of plants grow up, against the
direction of gravity.