NOS & What is Life

A _ is an educated guess or testable prediction

• control

• hypothesis

• dependent variable

An organized procedure for testing a hypothesis is a(n) _.

• experiment

• independent variable

• constant

A rule of nature that sums up related observations to describe a pattern in nature is a _.

• scientific law

• hypothesis

• scientific theory

A _ is an explanation based on experiments or the most logical explanation.

• hypothesis

• scientific law

• scientific theory

Process that uses observations and investigation to gain knowledge about events in nature is called _.

• science

• predicting

• inferring

Before designing and carrying out an experiment, one should find out what is already know about the topic by _.

• researching information

• analyzing data

• forming a conclusion

How do scientists learn about the world around us?

• By making laws
• By making theories
• Guessing
• Asking questions

What two things are needed for a scientific investigation?

• Data and observations
• Observations and a hypothesis
• Evidence and observations
• Hypothesis and conclusion

Which term is used when we attempt to explain patterns?

• Law
• Theory
• Hypothesis
• Conclusion

Which explanation best describes why theories can change?

• Scientists like to make kids learn new things
• Textbooks need to be updated
• More money is needed for research
• Scientists are always learning new things.