Writing Conclusion Paragraphs In A Science Lab Report (Page 2 of 4) in pdf

Writing Conclusion Paragraphs In A Science Lab Report Page 2

Name: _____________

Period : _______

Sample conclusion paragraph

Experiment: Mr. Bleier is trying to create the best environment for his fish in his aquarium. He

wants to figure out the relationship between the water’s temperature and the amount of oxygen

dissolved in it (fish need enough oxygen to breathe through their gills in the water).

He sets up an experiment where he uses ice and a hot plate to make different temperatures of

water, then measures the amount of dissolved oxygen present in the sample (with a chemical

set). Hypothesis: Oxygen levels will increase in warmer temperature water.

Conclusion paragraph:

The purpose of this experiment was to see the effect of changing water temperature on

the amount of dissolved oxygen that it carries (1). As the graph shows above, the coldest

temperature water had the most oxygen in it – about 6.50 mg / L at 5°C. The warmest

temperature water had the least oxygen in it – and the trend seems to be linear – as the

temperature increases, the amount of available oxygen decreases (2). This data contradicts my

original hypothesis (3). In this lab, we had trouble maintaining a temperature long enough to test

it accurately (the water would warm up as we went through the oxygen testing procedure).

Perhaps future tests could be done more quickly to prevent temperature swings (4). Future

experiments could test for other factors that affect oxygen levels in water – maybe adding plants

to the aquarium could affect oxygen levels (when they make oxygen in photosynthesis) (5).

Rubric for conclusion paragraphs in lab reports

Purpose restated

Major findings stated, refers to graph or data table

Revisits hypothesis (supported or not supported)

Suggests improvement to lab procedure

Suggests extension to lab

Modified from worksheet by M.J. Krech --

Writing Conclusion Paragraphs In A Science Lab Report Page 2