Sample Science Project
1. TitleQuestion or SubjectHow much sunlight do marigolds need? 2. PurposeWhat am I trying to find?Determine the minimum number of hours marigolds need to be healthy. 3. HypothesisHypotheses and predictions are often combined. Based on how I think things work, what do I expect to be true?Marigolds need at least 4 hours of sunlight a day to grow normally. 4. ProcedureHow did I test my predictions?Number of plants used; what variables kept constant and what allowed to vary; number of hours of sunlight; how many hours of sunlight, number of replicates.
Note: This should be recorded in a handwritten daily log.
5. ResultsA summary of my finding in words, graphs, and/or photographs.Pictures of healthy and dead marigolds, graph of plant height vs. hours of light. 6. ConclusionsWhat do my results indicate? Did the results support or conflict with my hypothesis and prediction?What was the minimum number of hours of sunlight needed? Hypothesis supported or rejected?
Steps Example 1. Make Observations Plants don’t seem to grow in the dark. 2. Form a Hypothesis
What do I think causes the observed phenomenon?
Okay: Plants need sunlight to grow.
Better: Marigolds need sunlight to grow.Better Still: Marigolds need at least a few hours of direct sunlight each day to grow.
3. Makes Predictions
If the hypothesis is true, what do I expect to see?
Marigolds will grow poorly or die with less than 4 hours of sunlight a day. 4. Test the Predictions
Expose seven marigolds to 1, 2, 3, 4, 5, 6, 7 hours of sunlight a day for 30 days. Measure plants height, number and size of leaves. Repeat two more times with new plants.
OR: Expose three plants at a time to set number of hours.Sunlight should be the only variable changed (same soil, age of marigold, pot size, water, temperature, etc.)
5. Interpret Results
And form new hypotheses for the next project.
What was the fewest number of hours required for healthy marigolds?