Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 448 · 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.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
3. 3.⚖️ 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 room it stands in (c) the length of the stem (d) the amount of colour
4. 4.True or false: a strip of cloth lets water climb up it. (a) False (b) True
5. 5.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
6. 6.True or false: a cotton thread does not let water climb. (a) True (b) False
7. 7.💧 Which of these does not let water climb? (a) a sugar cube (b) a glass marble (c) a flower stem (d) a strip of cloth
8. 8.True or false: a paper towel lets water climb up it. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a paper towel (d) a plastic ruler
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) turmeric powder (c) a balloon (d) yeast
11. 11.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
12. 12.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
13. 13.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
15. 15.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it turns to plastic (d) it sinks at once
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) food colour (d) a mirror
17. 17.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
18. 18.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
19. 19.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a battery cell (d) a few hours of waiting
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) food colour (d) a balloon
22. 22.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the petals turn red (d) the flower glows
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.⚖️ 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 measure it (b) we keep it the same (c) we change it
25. 25.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a magnet
29. 29.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a plastic ruler (d) a piece of chalk
31. 31.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they stay white (d) they fall off at once
32. 32.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a piece of foil (d) a paper towel
33. 33.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a glass marble (d) a sugar cube
34. 34.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) True (b) False
36. 36.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a strip of cloth (c) a plastic ruler (d) a steel spoon
37. 37.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals like colour (d) petals lose water to air
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a battery cell (d) turmeric powder
39. 39.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
40. 40.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a piece of foil (d) a paper towel

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