Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 89 · 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.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
2. 2.🪴 Which part of a plant does this job: give out water vapour? (a) roots (b) stem (c) leaves (d) flower
3. 3.🔬 In the scientific method, which step number is “observe and record”?
4. 4.True or false: a battery cell is needed for the fizzy balloon. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) running with glassware (b) washing hands afterwards (c) asking an adult first (d) wiping up spills at once
6. 6.🔮 Predict: 2 coins sit 5 cm left of the pencil and 2 coins sit 10 cm right of it. Which side goes down? (a) both go up (b) the left side (c) the right side (d) neither, it balances
7. 7.True or false: an iron nail floats on water. (a) False (b) True
8. 8.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
9. 9.True or false: a mirror is needed for the paper helicopter. (a) True (b) False
10. 10.True or false: air from the balloon goes backward. (a) True (b) False
11. 11.True or false: sugar does not dissolve in water. (a) True (b) False
12. 12.True or false: south near north push apart. (a) False (b) True
13. 13.True or false: sugar in warm water dissolves slower. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) a coin (b) honey (c) a ping-pong ball (d) a pebble
15. 15.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is what we measure? (a) which side goes down (b) where the pencil is (c) distance from the pencil (d) the kind of coins
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the same white paper (b) the amount of water (c) brightness of rainbow
17. 17.True or false: a mirror is needed for making butter. (a) False (b) True
18. 18.⚖️ Fair test — which kind of ball bounces highest? Which of these is the one thing we change? (a) bounce height (b) the floor surface (c) the kind of ball (d) the person dropping
19. 19.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, always (c) yes, if it is clear (d) no, germs may stay
20. 20.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
21. 21.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.🍋 Secret message: who does this step — ironing the paper? (a) a child can do it (b) an adult does it
23. 23.🛟 What should you do after touching soil or seeds? (a) skip washing (b) wash your hands (c) lick your fingers (d) rub your eyes
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) a white flower (d) food colour
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a funnel (d) a battery cell
26. 26.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
27. 27.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a flower stem
28. 28.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it makes salt (b) it is much faster (c) it takes much longer (d) it turns pink
29. 29.🥛 Which of these works by air pressure? (a) a suction hook (b) a magnetic chess set (c) a fridge magnet (d) a magnetic pin holder
30. 30.💧 Which of these is freezing? (a) water becoming ice (b) wet clothes drying (c) drops on a cold glass (d) dew on morning grass
31. 31.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) reflection (c) evaporation (d) refraction
32. 32.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) the amount of water (c) days to see crystals
34. 34.🥄 Which of these dissolves in water? (a) chalk powder (b) glucose powder (c) cooking oil (d) sand
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False
36. 36.True or false: a sugar cube does not let water climb. (a) False (b) True
37. 37.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🔮 Predict: you rub a balloon on dry hair and hold it on a wall. What happens? (a) it bursts at once (b) it sticks for a while (c) it falls straight down (d) it turns into water

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