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Name _____________________________ Date_________ Period______

Developing a Controlled Experiment

Directions: Using your knowledge of the Scientific Method, complete the following situations.

1. Define hypothesis? ___________________________________________________________
___________________________________________________________
___________________________________________________________
___________________________________________________________

2. Define experimental variable? ___________________________________________________________
___________________________________________________________
3. Why is it important for an experiment to contain a control? ___________________________________________________________
___________________________________________________________

4. Develop a controlled experiment to back up the following hypothesis:

The temperature of a lake has an effect on a fish's
ability to produce viable offspring.