Online Test — The Wonderful World of Science
15 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 15
Science is best described as:
A set of facts to memorise
Gaining knowledge through questions and evidence
Believing things without proof
A subject only for laboratories
Explanation: Science is a way of building knowledge using questions and evidence.
Question 2 of 15
Which of the following is an observation?
It will rain tomorrow
The plant is healthy
The leaf is green
The soil must be rich
Explanation: Seeing that the leaf is green is direct sensory information, so it is an observation.
Question 3 of 15
Which of these is an inference?
The road is wet
It must have rained
The bell is ringing
The flower is red
Explanation: Concluding that it rained from the wet road is an inference.
Question 4 of 15
‘The wire is 25 cm long’ is a:
Qualitative observation
Quantitative observation
Hypothesis
Conclusion
Explanation: It has a number and a unit, so it is a quantitative observation.
Question 5 of 15
A testable possible answer made before an experiment is a:
Conclusion
Result
Hypothesis
Observation
Explanation: A hypothesis is a testable prediction.
Question 6 of 15
In a fair test you should change:
Everything at once
Only one variable
Nothing at all
Two variables together
Explanation: Changing only one variable shows exactly what caused any change.
Question 7 of 15
Which instrument would you use to measure the temperature of water?
Ruler
Balance
Thermometer
Measuring cylinder
Explanation: A thermometer measures temperature.
Question 8 of 15
Which instrument measures the volume of a liquid?
Hand lens
Measuring cylinder
Thermometer
Balance
Explanation: A measuring cylinder measures liquid volume.
Question 9 of 15
The correct order of the scientific method is:
Hypothesis, question, conclusion, experiment
Question, hypothesis, experiment, conclusion
Experiment, conclusion, question, hypothesis
Conclusion, experiment, hypothesis, question
Explanation: We ask a question, form a hypothesis, do an experiment, then conclude.
Question 10 of 15
If an experiment does not support the hypothesis, a scientist should:
Hide the result
Change the result to fit
Learn from it and form a better hypothesis
Give up science
Explanation: Honest scientists treat an unexpected result as useful and improve their hypothesis.
Question 11 of 15
A result that others can repeat and obtain again is called:
Reproducible
Impossible
An opinion
Qualitative
Explanation: Reproducible results build trust in a scientific finding.
Question 12 of 15
Which of these is NOT a habit of good scientific thinking?
Being curious
Looking for evidence
Refusing to change your mind even with new proof
Being honest about results
Explanation: Good scientists keep an open mind and update ideas when new evidence appears.
Question 13 of 15
Which statement can be tested scientifically?
Blue is the best colour
Ice melts faster in warm water than cold water
Roses smell nicer than lilies
Holidays are too short
Explanation: The melting of ice can be observed and measured; the others are opinions.
Question 14 of 15
A hand lens or microscope is used to:
Measure mass
See very small things more clearly
Measure temperature
Time an event
Explanation: Lenses magnify tiny objects so we can observe them in detail.
Question 15 of 15
The last step of the scientific method, sharing your findings, is called:
Hypothesis
Communicating
Observing
Questioning
Explanation: Communicating results lets others check and build on the work.