Intro to Science Review

What is the first step of the scientific method?

• Conclusion

• Observation

• Hypothesis

• Experimentation

Answer explanation

The first step of the scientific method is observation. This involves gathering information and noticing phenomena, which leads to questions and further investigation.

After conducting an experiment, what is the first thing a scientist should do?

• Analyze the data

• Make a new hypothesis

• Publish the results

• Repeat the experiment

Answer explanation

After conducting an experiment, the first step is to analyze the data collected. This allows scientists to understand the results and determine if they support or refute the hypothesis before taking further actions.

Tags

NGSS.MS-PS1-2

Why is it important to repeat experiments in scientific research?

• To ensure the results are reliable

• To make the experiment longer

• To impress other scientists

• To gather more data for analysis

Answer explanation

Repeating experiments is crucial in scientific research to ensure the results are reliable. This helps confirm that findings are consistent and not due to random chance or experimental error.

In an experiment, what is a variable?

• A factor that can change or is tested

• A final result

• A constant value

• A measurement tool

Answer explanation

In an experiment, a variable is a factor that can change or is tested. This allows researchers to observe how different conditions affect outcomes, making it essential for experimentation.

Tags

NGSS.MS-PS3-4

What is the final step of the scientific method?

• Designing the experiment

• Drawing a conclusion

• Analyzing the data

• Formulating a hypothesis

Answer explanation

The final step of the scientific method is drawing a conclusion. This involves interpreting the results of the experiment and determining whether the hypothesis is supported or not.

In an experiment, what is a control variable?

• A variable that changes

• A variable that stays constant or doesn't change

• A variable that is tested

• A guess about what will happen

Answer explanation

A control variable is a variable that stays constant or doesn't change during an experiment. This ensures that any observed effects can be attributed to the independent variable, making the results more reliable.

Tags

NGSS.MS-PS2-2

What is an independent variable in an experiment?

• The group that receives the treatment

• The variable that is changed or manipulated

• The outcome that is measured

• The constant variable that is not changed

Answer explanation

The independent variable is the one that is changed or manipulated in an experiment to observe its effect on the dependent variable. This choice correctly identifies the role of the independent variable.

Which of the following is a testable hypothesis?

• If I water my plants more, then they will grow taller.

• Plants can communicate with each other.

• Increasing the amount of sunlight will speed up plant growth.

• Playing music to plants makes them happier.

Answer explanation

The statement 'If I water my plants more, then they will grow taller.' is a testable hypothesis because it can be experimentally verified by measuring plant growth with varying water levels.

Tags

NGSS.MS-LS2-1

What is a dependent variable in an experiment?

• The variable that is changed or manipulated

• The outcome that is measured or observed

• The constant variable that is not changed

• The group that receives the treatment

Answer explanation

The dependent variable is the outcome that is measured in an experiment. It responds to changes made to the independent variable, allowing researchers to assess the effect of their manipulations.

Tags

NGSS.MS-PS1-2

in the scientific method, what is the purpose of conducting an experiment?

• To make observations

• To test the hypothesis

• To collect data

• To analyze results

Answer explanation

The purpose of conducting an experiment in the scientific method is primarily to test the hypothesis. This allows researchers to determine if their predictions about a phenomenon are supported by empirical evidence.

Tags

NGSS.MS-PS1-2