Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 439 · 40 questions

What you do (Water climbs thin tubes): 1. Mix food colour into a glass of water. 2. An adult trims the flower stem and stands it in the coloured water. 3. Check the petals every few hours and draw what you see. 4. Wash your hands after handling food colour.

1. 1.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (d) a battery cell
2. 2.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the room it stands in (b) time for colour to show (c) the length of the stem
4. 4.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
5. 5.True or false: a piece of chalk lets water climb up it. (a) True (b) False
6. 6.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the amount of colour
8. 8.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a few hours of waiting (d) turmeric powder
10. 10.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
11. 11.True or false: a rubber eraser does not let water climb. (a) False (b) True
12. 12.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) no colour change (d) the stem turns blue
13. 13.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a paper towel (d) a glass marble
14. 14.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
15. 15.💧 Which of these lets water climb up it? (a) a paper towel (b) a glass marble (c) a steel spoon (d) a rubber eraser
16. 16.True or false: a flower stem lets water climb up it. (a) False (b) True
17. 17.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
18. 18.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a piece of foil (d) a flower stem
19. 19.True or false: a sugar cube lets water climb up it. (a) True (b) False
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of water (b) time for colour to show (c) the length of the stem (d) the amount of colour
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) a battery cell (d) a white flower
22. 22.🔍 Which is the odd one out? (a) a plastic ruler (b) a strip of cloth (c) a steel spoon (d) a glass marble
23. 23.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) lick your fingers (d) wash your hands
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) False (b) True
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) True (b) False
26. 26.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of foil (c) a flower stem (d) a piece of chalk
29. 29.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they fall off at once (d) they turn two colours
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) yeast (d) a magnet
31. 31.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the kind of flower (b) the amount of water (c) the amount of colour (d) the length of the stem
33. 33.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of chalk (c) a steel spoon (d) a glass marble
35. 35.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
36. 36.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.🔍 Which is the odd one out? (a) a sugar cube (b) a flower stem (c) a piece of foil (d) a paper towel
38. 38.🔍 Which is the odd one out? (a) a paper towel (b) a piece of chalk (c) a steel spoon (d) a strip of cloth
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a glass of water (c) food colour (d) a white flower
40. 40.True or false: a strip of cloth does not let water climb. (a) False (b) True

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