Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 46 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s science idea. 3. For a fair test: one thing changed, the rest kept the same, one thing measured. 4. For safety: an adult helps, nothing goes in the mouth, no heat, sharp tools or plug points for children.

1. 1.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
2. 2.🔍 Which is the odd one out? (a) tiny paper bits (b) thermocol bits (c) a steel spoon (d) a thin water stream
3. 3.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
4. 4.🔍 Which is the odd one out? (a) table salt (b) food colour (c) sawdust (d) glucose powder
5. 5.True or false: warm water is needed for the yeast balloon. (a) False (b) True
6. 6.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a balloon (c) a clock to check (d) a battery cell
7. 7.🔍 Which is the odd one out? (a) sunlight (b) warm water (c) sugar (d) time
8. 8.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
9. 9.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) veins (b) petals (c) roots (d) stomata
10. 10.⚖️ Fair test — does a stronger magnet pull a paper clip through more sheets of paper? What do we do with “the kind of paper”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.🧲 Is a cotton cloth magnetic or non-magnetic? (a) magnetic (b) non-magnetic
13. 13.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
14. 14.🛟 What should you do after touching soil or seeds? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) skip washing
15. 15.🚁 Which of these falls fast through the air? (a) a coin (b) a paper helicopter (c) a fluff of cotton (d) a feather
16. 16.🌉 Which of these makes a strong bridge? (a) a torn flat sheet (b) one flat sheet (c) a wet flat sheet (d) a zigzag-folded sheet
17. 17.🔬 Which step of the scientific method is this: “Only the wet-cotton seeds sprouted.” (a) hypothesis (b) question (c) experiment (d) observation
18. 18.🔍 Which is the odd one out? (a) asking an adult first (b) tying back long hair (c) wiping up spills at once (d) working with no adult
19. 19.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
20. 20.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
21. 21.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a lighter bob (c) a heavier bob (d) a shorter string
22. 22.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) a plastic comb (b) tiny paper bits (c) a balloon (d) a battery cell
23. 23.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) a balloon (c) a teaspoon (d) warm water
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
25. 25.True or false: a small bottle is not needed for the yeast balloon. (a) False (b) True
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it takes much longer (b) it is much faster (c) it makes salt (d) it turns pink
28. 28.⚙️ Which simple machine is a well pulley? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
29. 29.True or false: a long string is needed for the balloon rocket. (a) False (b) True
30. 30.True or false: a magnet is needed for the paper helicopter. (a) False (b) True
31. 31.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
32. 32.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
33. 33.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they stay white (c) they all turn green (d) they turn two colours
34. 34.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a battery cell (c) a straight stick (d) a clock to check
35. 35.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) yeast (c) an empty thread reel (d) coins as the load
36. 36.🌈 How many colours do we name in a rainbow (VIBGYOR)?
37. 37.🍋 Which of these steps is a job for an adult? (a) reading the message (b) dipping the cotton bud (c) plugging in the iron (d) writing the message
38. 38.🔮 Predict: you make more, closer zigzag folds. The bridge holds ___ coins. (a) the same number of (b) zero (c) fewer (d) more
39. 39.🥄 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
40. 40.🪴 Which part of a plant does this job: carry water upward? (a) flower (b) stem (c) roots (d) leaves

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