Which best describes the act of using senses or tools to gather information?

• creating a hypothesis

• making an observation

• summarizing the results

• recording the measurements

Tags

NGSS.MS-LS1-8

Which best describes the purpose of a control sample?

• to compare its results to those of a well-known scientist

• to have more qualitative data to analyze at the end of the experiment

• to compare its results to those with the experimental sample

In an investigation that uses the scientific method, which step immediately follows making a hypothesis?

• test your hypothesis

• summarizing the results

• making observations

• asking a question

When we test our hypothesis, there are two types of variables. What are they?

• Independent and controlled variable

• dependent and controlled variable

• independent and dependent variable

• none of the above

Constants are factors in an experiment that stay the same. True or False?

• True

• False

What should an experimenter do after analyzing data?

• carry out the experiment

• draw conclusions

• observe and infer

• identify the problem

Tags

NGSS.MS-PS1-2

What is the first step in a commonly used scientific method?

A statement that can be tested or is an educated guess is known as what?

• control

• observation

• independent variable

• hypothesis

Tags

NGSS.HS-LS2-3

NGSS.HS-LS3-2

Which best describes the purpose of a controlled experiment?

to prevent an undesired change in a variable

• to make sure the results of the experiment support the hypothesis

• to prevent a dangerous condition resulting from a reaction

• to examine whether one variable causes a change in another

• to prevent an undesired change in a variable

An independent variable is?

• step-by-step approach to solving problem

• a statement that can be tested

• variable measured during the experiment

• variable changed by the experimenter