Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 150 · 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.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) nothing ever happens (d) it sinks at once
2. 2.⚖️ 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
3. 3.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
4. 4.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.🔍 Which is the odd one out? (a) a glass marble (b) a strip of cloth (c) a piece of chalk (d) a sugar cube
6. 6.⚖️ 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 length of the stem (b) time for colour to show (c) the room it stands in (d) the amount of water
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a battery cell (d) a few hours of waiting
8. 8.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a cotton thread (c) a piece of foil (d) a steel spoon
9. 9.True or false: a steel spoon lets water climb up it. (a) False (b) True
10. 10.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
11. 11.True or false: a flower stem does not let water climb. (a) True (b) False
12. 12.True or false: a rubber eraser does not let water climb. (a) False (b) True
13. 13.True or false: a glass of water 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? What do we do with “the length of the stem”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
16. 16.💧 Which of these lets water climb up it? (a) a paper towel (b) a glass marble (c) a piece of foil (d) a rubber eraser
17. 17.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) the petals turn red (d) no colour change
18. 18.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they stay white (c) they all turn green (d) they turn two colours
19. 19.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
20. 20.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
21. 21.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
22. 22.🌼 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
23. 23.⚖️ 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) True (b) False
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a balloon (d) a few hours of waiting
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
26. 26.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) turmeric powder (d) a battery cell
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a mirror (d) a white flower
29. 29.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of chalk (c) a piece of foil (d) a paper towel
30. 30.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a balloon (d) a white flower
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 colour (c) the length of the stem (d) time for colour to show
33. 33.🔍 Which is the odd one out? (a) a steel spoon (b) a paper towel (c) a plastic ruler (d) a rubber eraser
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) food colour (c) a white flower (d) a glass of water
35. 35.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
36. 36.⚖️ 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
37. 37.True or false: a plastic ruler lets water climb up it. (a) True (b) False
38. 38.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) a magnet
40. 40.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed

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