Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 72 · 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.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a flower stem (d) a steel spoon
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) turmeric powder (c) a glass of water (d) a balloon
3. 3.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
5. 5.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.⚖️ 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 change it (b) we measure it (c) we keep it the same
7. 7.⚖️ 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 length of the stem (b) the amount of colour (c) time for colour to show (d) the room it stands in
8. 8.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a rubber eraser (d) a sugar cube
9. 9.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) no colour change (d) the stem turns blue
10. 10.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) a flower stem (b) a piece of foil (c) a piece of chalk (d) a strip of cloth
12. 12.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
13. 13.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a battery cell (d) food colour
14. 14.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a glass marble (d) a sugar cube
15. 15.True or false: a cotton thread does not let water climb. (a) True (b) False
16. 16.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the amount of water (c) the length of the stem (d) the kind of flower
18. 18.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
19. 19.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
20. 20.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
21. 21.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
22. 22.🔍 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
23. 23.🔍 Which is the odd one out? (a) a steel spoon (b) a paper towel (c) a piece of chalk (d) a flower stem
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) a few hours of waiting (d) a balloon
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a magnet (d) a balloon
26. 26.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a sugar cube (d) a steel spoon
27. 27.⚖️ 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 what we measure. (a) True (b) False
28. 28.⚖️ 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
29. 29.⚖️ 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 what we measure. (a) False (b) True
30. 30.⚖️ 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 change it (c) we measure it
31. 31.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
32. 32.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
33. 33.⚖️ 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 room it stands in (c) time for colour to show
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) a battery cell
35. 35.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
36. 36.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) wash your hands (d) rub your eyes
37. 37.⚖️ 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
38. 38.🔮 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
39. 39.⚖️ 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 the one thing we change. (a) False (b) True
40. 40.⚖️ 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

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