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

• To ensure the treatment has no effect

• To make the experiment more expensive

• To confuse the results

• To provide a baseline for comparison and ensure observed effects are due to the treatment being tested.

What is an independent variable in an experiment?

• The variable that is changed or manipulated

• The variable that is measured in the experiment

• The variable that is not relevant to the experiment

• The variable that remains constant throughout the experiment

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

What is a dependent variable in an experiment?

• The dependent variable is the variable that is manipulated by the experimenter.

• The dependent variable is the variable that is not affected by the independent variable.

• The dependent variable is the variable being measured or tested in an experiment.

• The dependent variable is the variable that remains constant in an experiment.

Tags

NGSS.MS-LS1-5

NGSS.MS-PS3-4

What is an experimental group in an experiment?

• The group that designs the experiment

• The group that analyzes the data

• The group that receives no treatment

• The group that receives the treatment or intervention being studied

How does the experimental group differ from the control group?

• The experimental group is not studied, while the control group is the focus of the research.

• The experimental group receives a placebo, while the control group receives the actual treatment.

• The experimental group receives the treatment or intervention being studied, while the control group does not receive the treatment.

• The experimental group is not given any instructions, while the control group follows a strict protocol.

Tags

NGSS.MS-LS1-5

What is a hypothesis in an experiment?

• A proposed explanation for a phenomenon or a scientific prediction that can be tested through experimentation.

• A statement that cannot be tested or proven

• A random guess with no basis in scientific evidence

• A conclusion drawn from the results of an experiment

Tags

NGSS.MS-LS1-5

NGSS.MS-PS1-2

If the hypothesis is tested and confirmed often enough, the scientific community calls the hypothesis a

• Fact

• Theory

• Law

• Principle

Tags

NGSS.MS-LS1-5

What is the role of the control group in an experiment?

• The control group is not studied, while the experimental group is the focus of the research.

• The control group receives the treatment or intervention being studied, while the experimental group does not receive the treatment.

• The control group provides a baseline for comparison and ensures observed effects are due to the treatment being tested.

• The control group is not given any instructions, while the experimental group follows a strict protocol.

When writing you hypothesis, what information follows IF?

• dependent variable

• how you know it will happen

• independent variable

• anything

When writing a hypothesis, what information do you fill in after THEN?

• dependent variable

• independent variable

• how you know it will happen

• anything good