What is a hypothesis?
  • A final answer
  • An educated guess to be tested
  • A random idea
  • A proven fact
Why is it important to protect Earth's environment?
  • To keep it clean for visitors
  • To ensure survival of all living things
  • To win awards
  • To avoid experiments
What is the first step of the scientific method?
  • Conclusion
  • Observation
  • Experiment
  • Hypothesis
A student notices that plants near sunlight grow taller. This is called:
  • Conclusion
  • Observation
  • Variable
  • Sampling
After making an observation, the next step is usually to:
  • Write conclusion
  • Form a hypothesis
  • Draw diagram
  • Ignore results
A hypothesis is:
  • A final answer
  • A random guess
  • A possible explanation that can be tested
  • A table of data
Which of the following is a testable question?
  • Why are roses beautiful?
  • Does warm water dissolve sugar faster?
  • Which flower is the prettiest?
  • Why do people like chocolates?
In an experiment, the factor changed by the student is called:
  • Dependent variable
  • Constant
  • Independent variable
  • Observation
In an experiment, the factor measured or observed is called:
  • Independent variable
  • Dependent variable
  • Sample
  • Conclusion
In the question “Which type of soil helps plants grow tallest?”, the independent variable is:
  • Plant height
  • Soil type
  • Amount of sunlight
  • Water
In the same experiment, the dependent variable is:
  • Soil type
  • Plant height
  • Pot size
  • Seed type
Why should experiments be repeated?
  • To waste time
  • To make results more reliable
  • To change results
  • To avoid observation
Which of the following should remain constant in a fair test?
  • Variables being tested
  • Conditions like amount of water and sunlight
  • Final conclusion
  • Student’s opinion
Recording data in a table helps because it:
  • Makes work confusing
  • Organizes information clearly
  • Changes results
  • Reduces observations
A student selects every 3rd plant in a row for study. This is called:
  • Random sampling
  • Systematic sampling
  • Biased sampling
  • Observation
Which of the following is an example of observation?
  • Plants need sunlight
  • The plant grew 5 cm in one week
  • Sunlight causes growth
  • Plants are useful
A conclusion should be written:
  • Before experiment
  • During observation
  • After analyzing results
  • Before hypothesis
Which is a dependent variable in this experiment? “How does temperature affect ice melting?”
  • Temperature
  • Ice size
  • Time taken to melt
  • Cup size
Which is an independent variable in this experiment? “Does fertilizer affect plant growth?”
  • Plant height
  • Fertilizer type
  • Number of leaves
  • Plant color
A fair test means:
  • Changing many factors together
  • Keeping conditions same except one variable
  • Guessing answers
  • Ignoring observations
Which step comes after conducting an experiment?
  • Observation
  • Conclusion
  • Forming hypothesis
  • Asking question
Scientists use scientific methods mainly to:
  • Make guesses
  • Find reliable answers using evidence
  • Avoid experiments
  • Draw pictures
What is the primary purpose of conducting a science experiment?
  • To test a hypothesis and gather data.
  • To observe natural phenomena without intervention.
  • To replicate previous experiments without changes.
  • To create a theory based on assumptions.
What does a scientist use to measure the volume of a liquid in an experiment?
  • Pipette or dropper
  • Thermometer or scale
  • Graduated cylinder or volumetric flask
  • Beaker or test tube
In a science experiment, what is a 'hypothesis'?
  • A hypothesis is a random guess without any basis.
  • A hypothesis is an untestable theory about the universe.
  • A hypothesis is a definitive conclusion drawn from data.
  • A hypothesis is a testable prediction about the relationship between variables.
Which of the following is an example of a simple science experiment you can do at home?
  • Mixing baking soda and vinegar to observe a chemical reaction.
  • Planting seeds to watch them grow over time.
  • Measuring the temperature of ice in a glass.
  • Boiling water to see how steam forms.
What is the importance of recording observations during a science experiment?
  • Recording observations is important for accurate data collection, analysis, and validation of scientific findings.
  • Observations can be ignored if results are clear.
  • Observations are only useful for personal reflection.
  • Recording data is unnecessary in scientific research.
In an experiment, what is the 'variable' that the scientist changes called?
  • constant variable
  • controlled variable
  • independent variable
  • dependent variable
Why is it important to repeat an experiment multiple times?
  • Repeating an experiment is unnecessary for accurate results.
  • Multiple trials can lead to confusion and errors.
  • It is important to repeat an experiment to save time and resources.
  • It is important to repeat an experiment multiple times to ensure reliability and validity of the results.
What safety precaution should always be followed when conducting a science experiment?
  • Wear appropriate personal protective equipment (PPE).
  • Conduct the experiment without supervision.
  • Ignore all safety guidelines.
  • Use open flames during the experiment.
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