Scientific Investigations

What is a hypothesis?

• a.) A proposed explanation or prediction that can be tested through experimentation or observation.

• b.) A statement that cannot be proven or disproven.

• c.) A random guess without any basis or evidence.

• d.) A conclusion drawn from limited data or personal opinion.

What are the two types of variables in a scientific investigation?

• a.) independent variables and dependent variables

• b.) manipulated variables

• c.) experimental variables

• d.) control variables

What is the purpose of experimental design in a scientific investigation?

• a.) To ensure reliable and valid results.

• b.) To make the results unpredictable

• c.) To waste time and resources

• d.) To confuse the researchers

Tags

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

What is the control group in an experiment?

• a.) The control group does NOT receive the experimental treatment.

• b.) The control group is the group that receives a placebo treatment.

• c.) The control group is the group that receives a experimental treatment.

• d.) The control group receives the experimental treatment.

What is the independent variable in an experiment?

• a.) The dependent variable

• b.) The constant

• c.) The control variable

• d.) The factor that is deliberately changed in an experiment. / "I change"

What is the dependent variable in an experiment?

• a.) The dependent variable is the variable being manipulated.

• b.) The dependent variable is the variable that remains constant.

• c.) The dependent variable is the variable that is controlled by the experimenter.

• d.) The dependent variable is the variable being measured or observed. (The effect)

What are three points that help you evaluate whether scientific information is reliable or not?

• a.)

  1.) The information was a result of a controlled experiment.

  2.) The results were reproducible.

  3.) The information is found in a scientific journal.

• b.)

  1.) The information was a result of a controlled experiment.

  2.) The results were NOT reproducible.

  3.) The information is found is from a .com resource.

• c.)

  1.) The information was a result of a controlled experiment.

  2.) The results were reproducible.

  3.) The information is found is from a .com resourse.

• d.)

  1.) The information was a result of a controlled experiment.

  2.) The experiment was only done once and not replicated.

  3.) The information is found in a scientific journal.

Tags

NGSS.HS-PS4-4

What are the steps involved in conducting a scientific investigation?

• a.) Formulating a research question or hypothesis, designing and planning the experiment, collecting and analyzing data, drawing conclusions based on personal biases, and communicating the results.

• b.) Formulating a research question or hypothesis, conducting the experiment without planning, collecting and analyzing data, drawing conclusions based on personal opinions, and communicating the results.

• c.) Formulating a research question or hypothesis, designing and planning the experiment, analyzing data, drawing conclusions based on personal beliefs, and communicating the results.

• d.) Formulating a research question or hypothesis, designing and planning the experiment, collecting and analyzing data, drawing conclusions based on the data, and communicating the results.

Why is it important to have a control group in an experiment?

• a.) To save time and resources

• b.) To ensure accurate results

• c.) To provide a baseline for comparison and determine the effects of the treatment.

• d.) To increase the sample size

What is the role of variables in a scientific investigation?

• a.) Variables have no role in a scientific investigation.

• b.) Variables only add complexity to a scientific investigation.

• c.) Variables are only used in non-scientific investigations.

• d.) Variables play a crucial role in a scientific investigation by allowing researchers to control and measure the factors that may influence the outcome.

Tags

NGSS.HS-PS1-5