What is the primary purpose of formulating a hypothesis in a scientific experiment?

• To ensure the experiment is conducted safely

• To provide a detailed procedure for the experiment

• To make a prediction that can be tested by experimentation

• To summarize the results of the experiment

Which of the following is an essential characteristic of a good hypothesis?

• It is based on personal beliefs

• It is complex and detailed

• It is testable and falsifiable

• It guarantees the expected outcome

In experimental design, what is the purpose of a control group?

• To receive the experimental treatment

• To be compared with the experimental group to measure the effect of the treatment

• To ensure the experiment is conducted in a controlled environment

• To control the variables that are not being tested

Tags

NGSS.HS-LS1-3

Which of the following best describes a double-blind experiment?

• Both the researchers and the participants are unaware of who receives the treatment

• Only the researchers know who receives the treatment

• Only the participants know whether they are receiving the treatment

• Both the researchers and the participants can choose who receives the treatment

What is the role of replication in experimental design?

• To ensure the experiment can be done only once

• To make the experiment more complex

• To verify the results by repeating the experiment under the same conditions

• To change the hypothesis based on the results of the first experiment

Which of the following data collection methods is most suitable for observing animal behavior in the wild?

• Surveys

• Experiments

• Case studies

• Naturalistic observation

Why is it important to have a large sample size in an experiment?

• To ensure the experiment takes a long time to complete

• To make the experiment more expensive

• To reduce the impact of outliers on the results

• To use all available resources

What is the significance of random assignment in experimental design?

• It ensures that the experiment can be easily replicated

• It helps to eliminate bias by distributing characteristics evenly across groups

• It allows the researchers to choose the participants for each group

• It makes the experiment more complex and difficult to analyze

Which of the following best describes quantitative data?

• Descriptions of characteristics that can be observed but not measured

• Data that can be measured and written down with numbers

• Opinions and personal feedback about the experiment

• Sketches and drawings made during the experiment

Tags

NGSS.HS-PS3-1

What is the purpose of using a standardized procedure in an experiment?

• To ensure that the experiment is unique and cannot be replicated

• To allow for variations in how the experiment is conducted

• To ensure that the experiment is conducted the same way every time

• To make the experiment more interesting and engaging