Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 581 · 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.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a steel spoon (d) a paper towel
3. 3.True or false: a glass marble lets water climb up it. (a) True (b) False
4. 4.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) turmeric powder (d) a glass of water
6. 6.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of foil (c) a flower stem (d) a strip of cloth
7. 7.True or false: a plastic ruler does not let water climb. (a) False (b) True
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) turmeric powder (c) a white flower (d) a battery cell
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.⚖️ 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
11. 11.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
12. 12.True or false: a cotton thread does not let water climb. (a) True (b) False
13. 13.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a mirror (d) a white flower
15. 15.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
16. 16.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the petals turn red (d) the stem turns blue
17. 17.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
18. 18.⚖️ 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 colour (b) time for colour to show (c) the amount of water (d) the length of the stem
19. 19.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) it sinks at once (d) nothing ever happens
20. 20.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
21. 21.⚖️ 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 amount of colour (c) the length of the stem
22. 22.⚖️ 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) True (b) False
23. 23.True or false: a sugar cube lets water climb up it. (a) True (b) False
24. 24.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
25. 25.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
26. 26.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a cotton thread (d) a plastic ruler
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) a mirror (d) a glass of water
30. 30.⚖️ 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
31. 31.🔍 Which is the odd one out? (a) a piece of chalk (b) a rubber eraser (c) a flower stem (d) a strip of cloth
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a mirror (d) a white flower
33. 33.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the flower floats away (d) the water turns green
34. 34.True or false: a sugar cube does not let water climb. (a) True (b) False
35. 35.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.⚖️ 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
37. 37.True or false: a steel spoon does not let water climb. (a) True (b) False
38. 38.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.🔮 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 fall off at once (c) they stay white (d) they turn two colours
40. 40.🔍 Which is the odd one out? (a) a sugar cube (b) a glass marble (c) a cotton thread (d) a flower stem

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