Q.1 What is the first step in the scientific method?
Forming a hypothesis
Making an observation
Drawing a conclusion
Conducting an experiment
Explanation - The scientific method begins with making observations about the natural world, which lead to questions.
Correct answer is: Making an observation
Q.2 What is a hypothesis?
A proven fact
An educated guess
A random opinion
A scientific law
Explanation - A hypothesis is a testable explanation or prediction based on prior knowledge and observation.
Correct answer is: An educated guess
Q.3 Which of the following must a hypothesis be?
Unchangeable
Proven true
Testable
A law
Explanation - Hypotheses must be testable and falsifiable so they can be evaluated through experiments.
Correct answer is: Testable
Q.4 What comes after forming a hypothesis in the scientific method?
Making observations
Conducting an experiment
Drawing a conclusion
Creating a theory
Explanation - After forming a hypothesis, experiments are designed to test its validity.
Correct answer is: Conducting an experiment
Q.5 What is the purpose of an experiment?
To prove a law
To test a hypothesis
To create a theory
To avoid errors
Explanation - Experiments are conducted to determine whether a hypothesis is supported or rejected.
Correct answer is: To test a hypothesis
Q.6 What is a variable in an experiment?
A fixed condition
A factor that can change
The result of the test
A proven fact
Explanation - Variables are factors that may change in an experiment, such as temperature or time.
Correct answer is: A factor that can change
Q.7 Which type of variable is deliberately changed by the scientist?
Dependent variable
Independent variable
Controlled variable
Random variable
Explanation - The independent variable is changed to observe its effect on the dependent variable.
Correct answer is: Independent variable
Q.8 What is a dependent variable?
The factor being measured
The factor being changed
A constant factor
An unimportant factor
Explanation - The dependent variable is the factor that responds to the independent variable and is measured.
Correct answer is: The factor being measured
Q.9 Why are controlled variables important?
They make experiments faster
They ensure only one factor is tested
They prove the hypothesis
They prevent errors completely
Explanation - Controlled variables keep conditions constant so the experiment tests only the independent variable.
Correct answer is: They ensure only one factor is tested
Q.10 What do scientists use to record data during experiments?
Predictions
Opinions
Measurements
Hypotheses
Explanation - Data is gathered through precise measurements to support or reject a hypothesis.
Correct answer is: Measurements
Q.11 What is qualitative data?
Data in numbers
Data describing qualities
Data measured with tools
Data from graphs
Explanation - Qualitative data describes characteristics such as color, smell, or texture.
Correct answer is: Data describing qualities
Q.12 What is quantitative data?
Descriptive data
Opinion-based data
Data in numerical form
Unmeasured data
Explanation - Quantitative data is measurable and expressed in numbers, like temperature or weight.
Correct answer is: Data in numerical form
Q.13 Why is repeating experiments important?
It makes science fun
It ensures accuracy and reliability
It wastes less time
It proves the hypothesis true
Explanation - Repeating experiments helps confirm that results are consistent and reliable.
Correct answer is: It ensures accuracy and reliability
Q.14 What is a scientific theory?
A guess
An untested idea
A well-supported explanation
A scientific law
Explanation - A scientific theory explains phenomena based on evidence collected over time.
Correct answer is: A well-supported explanation
Q.15 What is a scientific law?
A proven guess
A description of natural patterns
An explanation of why something happens
A hypothesis
Explanation - Scientific laws describe observed patterns in nature, often expressed mathematically.
Correct answer is: A description of natural patterns
Q.16 Which step comes after analyzing data?
Forming a hypothesis
Drawing a conclusion
Testing again
Making an observation
Explanation - After analyzing results, scientists draw conclusions about whether the hypothesis was supported.
Correct answer is: Drawing a conclusion
Q.17 What is peer review in science?
Sharing notes with classmates
Having experts evaluate work
Posting results online
Ignoring mistakes
Explanation - Peer review ensures scientific research is valid, accurate, and credible.
Correct answer is: Having experts evaluate work
Q.18 What makes a good scientific question?
It is based on opinion
It cannot be tested
It is testable and measurable
It has only one correct answer
Explanation - Good scientific questions can be tested through experiments and measured objectively.
Correct answer is: It is testable and measurable
Q.19 What is the role of evidence in science?
To support claims
To replace facts
To prove opinions
To prevent experiments
Explanation - Evidence provides support for scientific claims and conclusions.
Correct answer is: To support claims
Q.20 Which of these is an example of an observation?
The flower is red
Flowers are better than trees
Plants like music
I think the flower smells nice
Explanation - Observations are based on facts perceived through the senses, not opinions.
Correct answer is: The flower is red
Q.21 Why do scientists publish their results?
To win prizes
To share knowledge with others
To avoid repeating work
To keep secrets safe
Explanation - Publishing results allows others to learn, verify, and build upon the work.
Correct answer is: To share knowledge with others
Q.22 What is the main goal of the scientific method?
To prove a scientist right
To understand the natural world
To create opinions
To memorize facts
Explanation - The scientific method is used to explore and explain natural phenomena objectively.
Correct answer is: To understand the natural world
Q.23 What is bias in an experiment?
Accidental mistakes
Personal opinions affecting results
A natural law
The independent variable
Explanation - Bias occurs when personal beliefs or expectations influence scientific results.
Correct answer is: Personal opinions affecting results
Q.24 What tool is often used to organize experimental data?
Graphs and tables
Stories
Pictures
Hypotheses
Explanation - Graphs and tables help organize and interpret collected data for analysis.
Correct answer is: Graphs and tables
Q.25 Which step involves predicting what will happen in an experiment?
Conclusion
Hypothesis
Observation
Analysis
Explanation - A hypothesis predicts what will happen under certain conditions.
Correct answer is: Hypothesis