Science Study Guide – Scientific Method, CER, and Lab Safety

The first step of the scientific method is _________________

• asking a question

• analyzing data

• forming a conclusion

• conducting an experiment

A ________________ is a testable explanation for a natural event.

• hypothesis

• observation

• law

• variable

An ________________ variable is the part of an experiment that changes.

• independent

• dependent

• constant

• controlled

A ________________ stays the same so results can be compared.

• control

• variable

• experiment

• result

Data is often organized into _____________ or _____________.

• charts; graphs

• tables; chairs

• books; shelves

• boxes; bags

A ________________ is a one-sentence answer to a scientific question.

• claim

• hypothesis

• experiment

• observation

Scientists use the scientific method to ask questions, form hypotheses, test them through experiments, and draw conclusions. A hypothesis must always be testable, and experiments usually include variables and controls. Data is collected, organized into charts or graphs, and then analyzed to support or reject the hypothesis. In Claims, Evidence, and Reasoning (CER), a claim is a one-sentence answer to a scientific question. Evidence is the data gathered to support or refute the claim. Reasoning explains why the evidence supports the claim, using scientific principles. Lab safety is critical in science. Students must always act responsibly, wear protective gear, and never eat or drink in the lab. Following directions ensures experiments are valid and safe. Spills should be cleaned immediately, and hands washed afterward. 7. ________________ is the data used to support a claim.

• Evidence

• Hypothesis

• Reasoning

• Claim

Scientists use the scientific method to ask questions, form hypotheses, test them through experiments, and draw conclusions. A hypothesis must always be testable, and experiments usually include variables and controls. Data is collected, organized into charts or graphs, and then analyzed to support or reject the hypothesis. In Claims, Evidence, and Reasoning (CER), a claim is a one-sentence answer to a scientific question. Evidence is the data gathered to support or refute the claim. Reasoning explains why the evidence supports the claim, using scientific principles. Lab safety is critical in science. Students must always act responsibly, wear protective gear, and never eat or drink in the lab. Following directions ensures experiments are valid and safe. Spills should be cleaned immediately, and hands washed afterward. 8. ________________ connects the claim to the evidence using scientific principles.

• Reasoning

• Hypothesis

• Variable

• Control

In the soccer ball experiment, air had mass because the ball ________________ when pumped with air.

• got heavier

• got smaller

• changed color

• became softer

Students must always act ________________ in the lab.

• responsibly

• carelessly

• noisily

• recklessly