Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 691 · 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) food colour (b) a balloon (c) a white flower (d) a glass of water
2. 2.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
3. 3.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
4. 4.True or false: a piece of chalk lets water climb up it. (a) False (b) True
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a battery cell (d) food colour
6. 6.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) rub your eyes (d) lick your fingers
7. 7.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
8. 8.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.⚖️ 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 kept the same. (a) True (b) False
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) turmeric powder (d) a white flower
11. 11.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a strip of cloth
12. 12.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
13. 13.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a plastic ruler (d) a strip of cloth
14. 14.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
15. 15.True or false: a flower stem lets water climb up it. (a) False (b) True
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
17. 17.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.⚖️ 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 change it (b) we keep it the same (c) we measure it
19. 19.🔍 Which is the odd one out? (a) a sugar cube (b) a glass marble (c) a flower stem (d) a piece of chalk
20. 20.⚖️ 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 measure it (c) we change it
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) yeast (d) a glass of water
22. 22.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
23. 23.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.⚖️ 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 length of the stem (b) the kind of flower (c) time for colour to show
25. 25.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a piece of foil (d) a flower stem
26. 26.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a sugar cube (d) a plastic ruler
27. 27.True or false: a cotton thread lets water climb up it. (a) True (b) False
28. 28.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
29. 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
30. 30.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.💧 Which of these does not let water climb? (a) a paper towel (b) a strip of cloth (c) a steel spoon (d) a piece of chalk
32. 32.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
33. 33.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.💧 Which of these does not let water climb? (a) a strip of cloth (b) a glass marble (c) a sugar cube (d) a cotton thread
35. 35.⚖️ 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
36. 36.⚖️ 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 keep it the same (b) we measure it (c) we change it
37. 37.⚖️ 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 amount of water (b) the length of the stem (c) the kind of flower (d) the room it stands in
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
39. 39.💧 Which of these does not let water climb? (a) a flower stem (b) a cotton thread (c) a strip of cloth (d) a piece of foil
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a magnet (c) turmeric powder (d) a balloon

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