Which of these is NOT a hypothesis?

• All birds fly south in the winter.

• I think fish are delicious.

• Corn is heavier than rice.

• Metals always sink.

What is an independent variable in an experiment?

• what you change in an experiment

• what stays the same in an experiment

• the various hypotheses you could come up with

• the data gathered in the experiment

The last step in the scientific process is the

The scientific process always begins with a

Why do scientists form hypotheses?

Select all the steps in the scientific process.

• Question

• Data

• Summary

• Conclusion

• Solve

How do scientists and engineers differ?