The Practice of Science

The factor in an experiment that will be changed. 

• dependent variable

• independent variable

• controlled variable

• inferences 

A possible explanation to a problem or question that has not yet been tested. 

• data

• theory

• hypothesis

• fact

Tags

NGSS.HS-PS1-2

Mary is investigating to find out if bean plants grow taller in ordinary topsoil or special potting soil over a three week period. After Mary went through her steps to complete the Investigation why would she publish her procedures to the public?

• to encourage the scientific community to use their methods

• to show other scientists the importance of taking detailed notes

• to allow other scientists to replicate their results

• to demonstrate how many times their experiment has been replicated

Jonathan and Sarah have performed an experiment and are not sure their results are valid. What should they do to check their results?

• repeat the same experiment

• perform a new experiment

• average their data

• change their lab report

Tags

NGSS.MS-LS1-5

Below are set of statements, which one will be able to be seen as an example of a scientific theory?

• The doctor assumes the medication will cure a cold.

• The engineer says the boat should last on the water for at least 50 years.

• The meteorologist claims a thunderstorm will always produce hail.

• The scientist uses evidence to support the idea that cells come from pre-existing cells.

Tags

NGSS.HS-LS4-4

The summary at the end of an experiment that explains the results, and referrers to the hypothesis using data.

• materials

• responding variable

• conclusion

• procedures

Tags

NGSS.MS-LS2-4

Which of the following statements best describes how scientific knowledge changes

as new information is discovered?

• It helps advance scientific knowledge.

• It is accepted as true permanently.

• It is thrown out to preserve the old information.

• It hinders the advancement of scientific knowledge.

A series of steps used by scientists to solve a problem or answer a question. 

• metric system

• data collection

• recipe

• scientific method

Tags

NGSS.MS-PS1-2

The test of a hypothesis is called a

• control

• experiment

• dependent variable

• conclusion

Tags

NGSS.MS-PS1-2

An idea or explanation that can be studied or tested

• Conclusion

• Qualitative Data

• Analyze

• Hypothesis