DQ 9-23-09

Determine if the following materials will sink or float Rubber 1.506 g/cm3 Paper 0.929 g/cm3

What are the 7 steps of the scientific method (in order)?

Understanding Experiments

Mass Actual

Percent Error

5.6g 162%

15g 2%

Inference:

Observation:

DQ 9-24-09

(Copy questionsOnly)

According to the graph, what happens to bacteria growth after 40oC?

In an experiment which variable is changed on purpose?

Conclusions

Which was easier to observe – 2/3 or entire picture?

Is it possible these two animals never met each other?