Vidaara.orgClass 6 · Mathematics
CodeVID-M6-WS
The Wonderful World of Science — Practice Worksheet
Name: ____________________
Roll No.: __________
Date: ____________
General Instructions
- All questions are compulsory.
- Choose the correct option (A, B, C or D) for each question.
- The answer key is at the end — try the paper first!
Section A — Multiple Choice (1 mark each)
15 × 1 = 15 marks
1.
Science is best described as:
- A.A set of facts to memorise
- B.Gaining knowledge through questions and evidence
- C.Believing things without proof
- D.A subject only for laboratories
2.
Which of the following is an observation?
- A.It will rain tomorrow
- B.The plant is healthy
- C.The leaf is green
- D.The soil must be rich
3.
Which of these is an inference?
- A.The road is wet
- B.It must have rained
- C.The bell is ringing
- D.The flower is red
4.
‘The wire is 25 cm long’ is a:
- A.Qualitative observation
- B.Quantitative observation
- C.Hypothesis
- D.Conclusion
5.
A testable possible answer made before an experiment is a:
- A.Conclusion
- B.Result
- C.Hypothesis
- D.Observation
6.
In a fair test you should change:
- A.Everything at once
- B.Only one variable
- C.Nothing at all
- D.Two variables together
7.
Which instrument would you use to measure the temperature of water?
- A.Ruler
- B.Balance
- C.Thermometer
- D.Measuring cylinder
8.
Which instrument measures the volume of a liquid?
- A.Hand lens
- B.Measuring cylinder
- C.Thermometer
- D.Balance
9.
The correct order of the scientific method is:
- A.Hypothesis, question, conclusion, experiment
- B.Question, hypothesis, experiment, conclusion
- C.Experiment, conclusion, question, hypothesis
- D.Conclusion, experiment, hypothesis, question
10.
If an experiment does not support the hypothesis, a scientist should:
- A.Hide the result
- B.Change the result to fit
- C.Learn from it and form a better hypothesis
- D.Give up science
11.
A result that others can repeat and obtain again is called:
- A.Reproducible
- B.Impossible
- C.An opinion
- D.Qualitative
12.
Which of these is NOT a habit of good scientific thinking?
- A.Being curious
- B.Looking for evidence
- C.Refusing to change your mind even with new proof
- D.Being honest about results
13.
Which statement can be tested scientifically?
- A.Blue is the best colour
- B.Ice melts faster in warm water than cold water
- C.Roses smell nicer than lilies
- D.Holidays are too short
14.
A hand lens or microscope is used to:
- A.Measure mass
- B.See very small things more clearly
- C.Measure temperature
- D.Time an event
15.
The last step of the scientific method, sharing your findings, is called:
- A.Hypothesis
- B.Communicating
- C.Observing
- D.Questioning
Section B — Challenge / Olympiad (2 marks each)
6 × 2 = 12 marks
16.
Two plants are kept in identical pots, soil, water and sunlight; only one is given plant food. This setup is designed mainly to:
- A.Make a fair test by changing only one variable
- B.Save space on a windowsill
- C.Use less water
- D.Grow flowers quickly
17.
A student measures a rod three times and gets 20.1 cm, 20.0 cm and 20.2 cm. Repeating the measurement mainly helps to:
- A.Make the rod longer
- B.Reduce mistakes and check the result is reliable
- C.Change the unit
- D.Prove the ruler is broken
18.
Which pair is correctly matched as observation → inference?
- A.The grass is wet → it rained last night
- B.It rained → the grass is green
- C.The dog is brown → the dog is brown
- D.It is morning → the time is 7 o’clock
19.
A hypothesis differs from a conclusion because a hypothesis is made:
- A.After the experiment, using the results
- B.Before the experiment, as a testable prediction
- C.Only by famous scientists
- D.Without any question
20.
Which question is the MOST scientific because it can be measured?
- A.Is winter nicer than summer?
- B.Does salt water boil at a higher temperature than plain water?
- C.Which fruit is tastiest?
- D.Is reading better than drawing?
21.
Why do scientists communicate their results to others?
- A.To keep their work secret
- B.So others can check, repeat and build on the findings
- C.To avoid doing experiments
- D.Because results are always opinions
Answer Key
Section A — Multiple Choice (1 mark each)
- (B) Gaining knowledge through questions and evidence
- (C) The leaf is green
- (B) It must have rained
- (B) Quantitative observation
- (C) Hypothesis
- (B) Only one variable
- (C) Thermometer
- (B) Measuring cylinder
- (B) Question, hypothesis, experiment, conclusion
- (C) Learn from it and form a better hypothesis
- (A) Reproducible
- (C) Refusing to change your mind even with new proof
- (B) Ice melts faster in warm water than cold water
- (B) See very small things more clearly
- (B) Communicating
Section B — Challenge / Olympiad (2 marks each)
- (A) Make a fair test by changing only one variable
- (B) Reduce mistakes and check the result is reliable
- (A) The grass is wet → it rained last night
- (B) Before the experiment, as a testable prediction
- (B) Does salt water boil at a higher temperature than plain water?
- (B) So others can check, repeat and build on the findings
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