Figure 1.9: Outdoor Excursions. ( 15 )
tank. In the tank with no oil, the average growth was 2.57cm. The average growth of
the seaweed in the tank with oil was 2.37cm. Based on this experiment, answer the
following questions:
(a) What was the question that the scientist started with?
(b)What was his hypothesis?
(c) Identify the independent variable, the dependent variable, and the experimental
control(s).
(d)What did the data show?
- Explain three types of scientific models. What is one benefit of each and one disad-
vantage of each?
- Identify or design five of your own safety symbols, based on your knowledge of safety
procedures in a science laboratory.
- Design your own experiment based on one of your questions from question 1 above.
Include the question, hypothesis, independent and dependent variables, and safety
precautions. You may want to work with your teacher or a group.
